| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.hadoop.hbase; |
| |
| import static org.apache.hadoop.hbase.io.hfile.BlockType.MAGIC_LENGTH; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.charset.Charset; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.UUID; |
| import org.apache.commons.lang3.ArrayUtils; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| /** |
| * HConstants holds a bunch of HBase-related constants |
| */ |
| @InterfaceAudience.Public |
| public final class HConstants { |
| // NOTICE!!!! Please do not add a constants here, unless they are referenced by a lot of classes. |
| |
| //Bytes.UTF8_ENCODING should be updated if this changed |
| /** When we encode strings, we always specify UTF8 encoding */ |
| public static final String UTF8_ENCODING = "UTF-8"; |
| |
| //Bytes.UTF8_CHARSET should be updated if this changed |
| /** When we encode strings, we always specify UTF8 encoding */ |
| public static final Charset UTF8_CHARSET = Charset.forName(UTF8_ENCODING); |
| /** |
| * Default block size for an HFile. |
| */ |
| public final static int DEFAULT_BLOCKSIZE = 64 * 1024; |
| |
| /** Used as a magic return value while optimized index key feature enabled(HBASE-7845) */ |
| public final static int INDEX_KEY_MAGIC = -2; |
| |
| /* |
| * Name of directory that holds recovered edits written by the wal log |
| * splitting code, one per region |
| */ |
| public static final String RECOVERED_EDITS_DIR = "recovered.edits"; |
| |
| /* |
| * Name of directory that holds recovered hfiles written by the wal log |
| * splitting code, one per region |
| */ |
| public static final String RECOVERED_HFILES_DIR = "recovered.hfiles"; |
| |
| /** |
| * Date Tiered Compaction tmp dir prefix name if use storage policy |
| */ |
| public static final String STORAGE_POLICY_PREFIX = "storage_policy_"; |
| |
| /** |
| * The first four bytes of Hadoop RPC connections |
| */ |
| public static final byte[] RPC_HEADER = new byte[] { 'H', 'B', 'a', 's' }; |
| public static final byte RPC_CURRENT_VERSION = 0; |
| |
| // HFileBlock constants. TODO!!!! THESE DEFINES BELONG IN HFILEBLOCK, NOT UP HERE. |
| // Needed down in hbase-common though by encoders but these encoders should not be dealing |
| // in the internals of hfileblocks. Fix encapsulation. |
| |
| /** The size data structures with minor version is 0 */ |
| public static final int HFILEBLOCK_HEADER_SIZE_NO_CHECKSUM = MAGIC_LENGTH + 2 * Bytes.SIZEOF_INT |
| + Bytes.SIZEOF_LONG; |
| /** The size of a version 2 HFile block header, minor version 1. |
| * There is a 1 byte checksum type, followed by a 4 byte bytesPerChecksum |
| * followed by another 4 byte value to store sizeofDataOnDisk. |
| */ |
| public static final int HFILEBLOCK_HEADER_SIZE = HFILEBLOCK_HEADER_SIZE_NO_CHECKSUM + |
| Bytes.SIZEOF_BYTE + 2 * Bytes.SIZEOF_INT; |
| /** Just an array of bytes of the right size. */ |
| public static final byte[] HFILEBLOCK_DUMMY_HEADER = new byte[HFILEBLOCK_HEADER_SIZE]; |
| |
| //End HFileBlockConstants. |
| |
| /** |
| * Status codes used for return values of bulk operations. |
| */ |
| @InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC) |
| public enum OperationStatusCode { |
| NOT_RUN, |
| SUCCESS, |
| BAD_FAMILY, |
| STORE_TOO_BUSY, |
| SANITY_CHECK_FAILURE, |
| FAILURE |
| } |
| |
| /** long constant for zero */ |
| public static final Long ZERO_L = Long.valueOf(0L); |
| public static final String NINES = "99999999999999"; |
| public static final String ZEROES = "00000000000000"; |
| |
| // For migration |
| |
| /** name of version file */ |
| public static final String VERSION_FILE_NAME = "hbase.version"; |
| |
| /** |
| * Current version of file system. |
| * Version 4 supports only one kind of bloom filter. |
| * Version 5 changes versions in catalog table regions. |
| * Version 6 enables blockcaching on catalog tables. |
| * Version 7 introduces hfile -- hbase 0.19 to 0.20.. |
| * Version 8 introduces namespace |
| */ |
| // public static final String FILE_SYSTEM_VERSION = "6"; |
| public static final String FILE_SYSTEM_VERSION = "8"; |
| |
| // Configuration parameters |
| |
| //TODO: Is having HBase homed on port 60k OK? |
| |
| /** Cluster is in distributed mode or not */ |
| public static final String CLUSTER_DISTRIBUTED = "hbase.cluster.distributed"; |
| |
| /** Config for pluggable load balancers */ |
| public static final String HBASE_MASTER_LOADBALANCER_CLASS = "hbase.master.loadbalancer.class"; |
| |
| /** Config for balancing the cluster by table */ |
| public static final String HBASE_MASTER_LOADBALANCE_BYTABLE = "hbase.master.loadbalance.bytable"; |
| |
| /** Config for the max percent of regions in transition */ |
| public static final String HBASE_MASTER_BALANCER_MAX_RIT_PERCENT = |
| "hbase.master.balancer.maxRitPercent"; |
| |
| /** Default value for the max percent of regions in transition */ |
| public static final double DEFAULT_HBASE_MASTER_BALANCER_MAX_RIT_PERCENT = 1.0; |
| |
| /** Config for the max balancing time */ |
| public static final String HBASE_BALANCER_MAX_BALANCING = "hbase.balancer.max.balancing"; |
| |
| /** Config for the balancer period */ |
| public static final String HBASE_BALANCER_PERIOD = "hbase.balancer.period"; |
| |
| /** Default value for the balancer period */ |
| public static final int DEFAULT_HBASE_BALANCER_PERIOD = 300000; |
| |
| /** |
| * Config key for enable/disable automatically separate child regions to different region servers |
| * in the procedure of split regions. One child will be kept to the server where parent |
| * region is on, and the other child will be assigned to a random server. |
| * See HBASE-25518. |
| */ |
| public static final String HBASE_ENABLE_SEPARATE_CHILD_REGIONS = |
| "hbase.master.auto.separate.child.regions.after.split.enabled"; |
| |
| /** |
| * Default value for automatically separate child regions to different region servers |
| * (set to "false" to keep all child regions to the server where parent region is on) |
| */ |
| public static final boolean DEFAULT_HBASE_ENABLE_SEPARATE_CHILD_REGIONS = false; |
| |
| /** The name of the ensemble table */ |
| public static final TableName ENSEMBLE_TABLE_NAME = TableName.valueOf("hbase:ensemble"); |
| |
| /** Config for pluggable region normalizer */ |
| public static final String HBASE_MASTER_NORMALIZER_CLASS = |
| "hbase.master.normalizer.class"; |
| |
| /** Cluster is standalone or pseudo-distributed */ |
| public static final boolean CLUSTER_IS_LOCAL = false; |
| |
| /** Default value for cluster distributed mode */ |
| public static final boolean DEFAULT_CLUSTER_DISTRIBUTED = CLUSTER_IS_LOCAL; |
| |
| /** default host address */ |
| public static final String DEFAULT_HOST = "0.0.0.0"; |
| |
| /** Parameter name for port master listens on. */ |
| public static final String MASTER_PORT = "hbase.master.port"; |
| |
| /** default port that the master listens on */ |
| public static final int DEFAULT_MASTER_PORT = 16000; |
| |
| /** default port for master web api */ |
| public static final int DEFAULT_MASTER_INFOPORT = 16010; |
| |
| /** Configuration key for master web API port */ |
| public static final String MASTER_INFO_PORT = "hbase.master.info.port"; |
| |
| /** Configuration key for the list of master host:ports **/ |
| public static final String MASTER_ADDRS_KEY = "hbase.masters"; |
| |
| /** Full class name of the Zookeeper based connection registry implementation */ |
| public static final String ZK_CONNECTION_REGISTRY_CLASS = |
| "org.apache.hadoop.hbase.client.ZKConnectionRegistry"; |
| |
| /** Parameter name for the master type being backup (waits for primary to go inactive). */ |
| public static final String MASTER_TYPE_BACKUP = "hbase.master.backup"; |
| |
| /** |
| * by default every master is a possible primary master unless the conf explicitly overrides it |
| */ |
| public static final boolean DEFAULT_MASTER_TYPE_BACKUP = false; |
| |
| /** Name of ZooKeeper quorum configuration parameter. */ |
| public static final String ZOOKEEPER_QUORUM = "hbase.zookeeper.quorum"; |
| |
| /** Name of ZooKeeper quorum configuration parameter for client to locate meta. */ |
| public static final String CLIENT_ZOOKEEPER_QUORUM = "hbase.client.zookeeper.quorum"; |
| |
| /** Client port of ZooKeeper for client to locate meta */ |
| public static final String CLIENT_ZOOKEEPER_CLIENT_PORT = |
| "hbase.client.zookeeper.property.clientPort"; |
| |
| /** Indicate whether the client ZK are observer nodes of the server ZK */ |
| public static final String CLIENT_ZOOKEEPER_OBSERVER_MODE = |
| "hbase.client.zookeeper.observer.mode"; |
| /** Assuming client zk not in observer mode and master need to synchronize information */ |
| public static final boolean DEFAULT_CLIENT_ZOOKEEPER_OBSERVER_MODE = false; |
| |
| /** Common prefix of ZooKeeper configuration properties */ |
| public static final String ZK_CFG_PROPERTY_PREFIX = |
| "hbase.zookeeper.property."; |
| |
| public static final int ZK_CFG_PROPERTY_PREFIX_LEN = |
| ZK_CFG_PROPERTY_PREFIX.length(); |
| |
| /** |
| * The ZK client port key in the ZK properties map. The name reflects the |
| * fact that this is not an HBase configuration key. |
| */ |
| public static final String CLIENT_PORT_STR = "clientPort"; |
| |
| /** Parameter name for the client port that the zookeeper listens on */ |
| public static final String ZOOKEEPER_CLIENT_PORT = |
| ZK_CFG_PROPERTY_PREFIX + CLIENT_PORT_STR; |
| |
| /** Default client port that the zookeeper listens on */ |
| public static final int DEFAULT_ZOOKEEPER_CLIENT_PORT = 2181; |
| |
| /** Parameter name for the root dir in ZK for this cluster */ |
| public static final String ZOOKEEPER_ZNODE_PARENT = "zookeeper.znode.parent"; |
| |
| public static final String DEFAULT_ZOOKEEPER_ZNODE_PARENT = "/hbase"; |
| |
| /** |
| * Parameter name for the limit on concurrent client-side zookeeper |
| * connections |
| */ |
| public static final String ZOOKEEPER_MAX_CLIENT_CNXNS = |
| ZK_CFG_PROPERTY_PREFIX + "maxClientCnxns"; |
| |
| /** Parameter name for the ZK data directory */ |
| public static final String ZOOKEEPER_DATA_DIR = |
| ZK_CFG_PROPERTY_PREFIX + "dataDir"; |
| |
| /** Parameter name for the ZK tick time */ |
| public static final String ZOOKEEPER_TICK_TIME = |
| ZK_CFG_PROPERTY_PREFIX + "tickTime"; |
| |
| /** Default limit on concurrent client-side zookeeper connections */ |
| public static final int DEFAULT_ZOOKEEPER_MAX_CLIENT_CNXNS = 300; |
| |
| /** Configuration key for ZooKeeper session timeout */ |
| public static final String ZK_SESSION_TIMEOUT = "zookeeper.session.timeout"; |
| |
| /** Timeout for the ZK sync() call */ |
| public static final String ZK_SYNC_BLOCKING_TIMEOUT_MS = "hbase.zookeeper.sync.timeout.millis"; |
| // Choice of the default value is based on the following ZK recommendation (from docs). Keeping it |
| // lower lets the callers fail fast in case of any issues. |
| // "The clients view of the system is guaranteed to be up-to-date within a certain time bound. |
| // (On the order of tens of seconds.) Either system changes will be seen by a client within this |
| // bound, or the client will detect a service outage." |
| public static final long ZK_SYNC_BLOCKING_TIMEOUT_DEFAULT_MS = 30 * 1000; |
| |
| /** Default value for ZooKeeper session timeout */ |
| public static final int DEFAULT_ZK_SESSION_TIMEOUT = 90 * 1000; |
| |
| /** Parameter name for port region server listens on. */ |
| public static final String REGIONSERVER_PORT = "hbase.regionserver.port"; |
| |
| /** Default port region server listens on. */ |
| public static final int DEFAULT_REGIONSERVER_PORT = 16020; |
| |
| /** default port for region server web api */ |
| public static final int DEFAULT_REGIONSERVER_INFOPORT = 16030; |
| |
| /** A configuration key for regionserver info port */ |
| public static final String REGIONSERVER_INFO_PORT = |
| "hbase.regionserver.info.port"; |
| |
| /** A flag that enables automatic selection of regionserver info port */ |
| public static final String REGIONSERVER_INFO_PORT_AUTO = |
| REGIONSERVER_INFO_PORT + ".auto"; |
| |
| /** Parameter name for what region server implementation to use. */ |
| public static final String REGION_SERVER_IMPL= "hbase.regionserver.impl"; |
| |
| /** Parameter name for what master implementation to use. */ |
| public static final String MASTER_IMPL= "hbase.master.impl"; |
| |
| /** Parameter name for how often threads should wake up */ |
| public static final String THREAD_WAKE_FREQUENCY = "hbase.server.thread.wakefrequency"; |
| |
| /** Default value for thread wake frequency */ |
| public static final int DEFAULT_THREAD_WAKE_FREQUENCY = 10 * 1000; |
| |
| /** Parameter name for how often we should try to write a version file, before failing */ |
| public static final String VERSION_FILE_WRITE_ATTEMPTS = "hbase.server.versionfile.writeattempts"; |
| |
| /** Parameter name for how often we should try to write a version file, before failing */ |
| public static final int DEFAULT_VERSION_FILE_WRITE_ATTEMPTS = 3; |
| |
| /** Parameter name and default value for how often a region should perform a major compaction */ |
| public static final String MAJOR_COMPACTION_PERIOD = "hbase.hregion.majorcompaction"; |
| public static final long DEFAULT_MAJOR_COMPACTION_PERIOD = 1000 * 60 * 60 * 24 * 7; // 7 days |
| |
| /** |
| * Parameter name and default value for major compaction jitter. |
| * Used as a multiplier applied to {@link HConstants#MAJOR_COMPACTION_PERIOD} |
| * to cause compaction to occur a given amount of time either side of |
| * {@link HConstants#MAJOR_COMPACTION_PERIOD}. |
| * Default to 0.5 so jitter has us fall evenly either side of when the compaction should run. |
| */ |
| public static final String MAJOR_COMPACTION_JITTER = "hbase.hregion.majorcompaction.jitter"; |
| public static final float DEFAULT_MAJOR_COMPACTION_JITTER = 0.50F; |
| |
| /** Parameter name for the maximum batch of KVs to be used in flushes and compactions */ |
| public static final String COMPACTION_KV_MAX = "hbase.hstore.compaction.kv.max"; |
| public static final int COMPACTION_KV_MAX_DEFAULT = 10; |
| |
| /** Parameter name for HBase instance root directory */ |
| public static final String HBASE_DIR = "hbase.rootdir"; |
| |
| /** Parameter name for HBase client IPC pool type */ |
| public static final String HBASE_CLIENT_IPC_POOL_TYPE = "hbase.client.ipc.pool.type"; |
| |
| /** Parameter name for HBase client IPC pool size */ |
| public static final String HBASE_CLIENT_IPC_POOL_SIZE = "hbase.client.ipc.pool.size"; |
| |
| /** Parameter name for HBase client operation timeout. */ |
| public static final String HBASE_CLIENT_OPERATION_TIMEOUT = "hbase.client.operation.timeout"; |
| |
| /** Parameter name for HBase client meta operation timeout. */ |
| public static final String HBASE_CLIENT_META_OPERATION_TIMEOUT = |
| "hbase.client.meta.operation.timeout"; |
| |
| /** Default HBase client operation timeout, which is tantamount to a blocking call */ |
| public static final int DEFAULT_HBASE_CLIENT_OPERATION_TIMEOUT = 1200000; |
| |
| /** Parameter name for HBase client meta replica scan call timeout. */ |
| public static final String HBASE_CLIENT_META_REPLICA_SCAN_TIMEOUT = |
| "hbase.client.meta.replica.scan.timeout"; |
| |
| /** Default HBase client meta replica scan call timeout, 1 second */ |
| public static final int HBASE_CLIENT_META_REPLICA_SCAN_TIMEOUT_DEFAULT = 1000000; |
| |
| /** Used to construct the name of the log directory for a region server */ |
| public static final String HREGION_LOGDIR_NAME = "WALs"; |
| |
| /** Used to construct the name of the splitlog directory for a region server */ |
| public static final String SPLIT_LOGDIR_NAME = "splitWAL"; |
| |
| /** Like the previous, but for old logs that are about to be deleted */ |
| public static final String HREGION_OLDLOGDIR_NAME = "oldWALs"; |
| |
| /** Staging dir used by bulk load */ |
| public static final String BULKLOAD_STAGING_DIR_NAME = "staging"; |
| |
| public static final String CORRUPT_DIR_NAME = "corrupt"; |
| |
| /** Used by HBCK to sideline backup data */ |
| public static final String HBCK_SIDELINEDIR_NAME = ".hbck"; |
| |
| /** Any artifacts left from migration can be moved here */ |
| public static final String MIGRATION_NAME = ".migration"; |
| |
| /** Used to construct the name of the compaction directory during compaction */ |
| public static final String HREGION_COMPACTIONDIR_NAME = "compaction.dir"; |
| |
| /** Conf key for the max file size after which we split the region */ |
| public static final String HREGION_MAX_FILESIZE = |
| "hbase.hregion.max.filesize"; |
| |
| /** Default maximum file size */ |
| public static final long DEFAULT_MAX_FILE_SIZE = 10 * 1024 * 1024 * 1024L; |
| |
| /** Conf key for if we should sum overall region files size when check to split */ |
| public static final String OVERALL_HREGION_FILES = |
| "hbase.hregion.split.overallfiles"; |
| |
| /** Default overall region files */ |
| public static final boolean DEFAULT_OVERALL_HREGION_FILES = true; |
| |
| /** |
| * Max size of single row for Get's or Scan's without in-row scanning flag set. |
| */ |
| public static final String TABLE_MAX_ROWSIZE_KEY = "hbase.table.max.rowsize"; |
| |
| /** |
| * Default max row size (1 Gb). |
| */ |
| public static final long TABLE_MAX_ROWSIZE_DEFAULT = 1024 * 1024 * 1024L; |
| |
| /** |
| * The max number of threads used for opening and closing stores or store |
| * files in parallel |
| */ |
| public static final String HSTORE_OPEN_AND_CLOSE_THREADS_MAX = |
| "hbase.hstore.open.and.close.threads.max"; |
| |
| /** |
| * The default number for the max number of threads used for opening and |
| * closing stores or store files in parallel |
| */ |
| public static final int DEFAULT_HSTORE_OPEN_AND_CLOSE_THREADS_MAX = 1; |
| |
| /** |
| * Block updates if memstore has hbase.hregion.memstore.block.multiplier |
| * times hbase.hregion.memstore.flush.size bytes. Useful preventing |
| * runaway memstore during spikes in update traffic. |
| */ |
| public static final String HREGION_MEMSTORE_BLOCK_MULTIPLIER = |
| "hbase.hregion.memstore.block.multiplier"; |
| |
| /** |
| * Default value for hbase.hregion.memstore.block.multiplier |
| */ |
| public static final int DEFAULT_HREGION_MEMSTORE_BLOCK_MULTIPLIER = 4; |
| |
| /** Conf key for the memstore size at which we flush the memstore */ |
| public static final String HREGION_MEMSTORE_FLUSH_SIZE = |
| "hbase.hregion.memstore.flush.size"; |
| |
| public static final String HREGION_EDITS_REPLAY_SKIP_ERRORS = |
| "hbase.hregion.edits.replay.skip.errors"; |
| |
| public static final boolean DEFAULT_HREGION_EDITS_REPLAY_SKIP_ERRORS = |
| false; |
| |
| /** Maximum value length, enforced on KeyValue construction */ |
| public static final int MAXIMUM_VALUE_LENGTH = Integer.MAX_VALUE - 1; |
| |
| /** name of the file for unique cluster ID */ |
| public static final String CLUSTER_ID_FILE_NAME = "hbase.id"; |
| |
| /** Default value for cluster ID */ |
| public static final String CLUSTER_ID_DEFAULT = "default-cluster"; |
| |
| /** Parameter name for # days to keep MVCC values during a major compaction */ |
| public static final String KEEP_SEQID_PERIOD = "hbase.hstore.compaction.keep.seqId.period"; |
| /** At least to keep MVCC values in hfiles for 5 days */ |
| public static final int MIN_KEEP_SEQID_PERIOD = 5; |
| |
| // Always store the location of the root table's HRegion. |
| // This HRegion is never split. |
| |
| // region name = table + startkey + regionid. This is the row key. |
| // each row in the root and meta tables describes exactly 1 region |
| // Do we ever need to know all the information that we are storing? |
| |
| // Note that the name of the root table starts with "-" and the name of the |
| // meta table starts with "." Why? it's a trick. It turns out that when we |
| // store region names in memory, we use a SortedMap. Since "-" sorts before |
| // "." (and since no other table name can start with either of these |
| // characters, the root region will always be the first entry in such a Map, |
| // followed by all the meta regions (which will be ordered by their starting |
| // row key as well), followed by all user tables. So when the Master is |
| // choosing regions to assign, it will always choose the root region first, |
| // followed by the meta regions, followed by user regions. Since the root |
| // and meta regions always need to be on-line, this ensures that they will |
| // be the first to be reassigned if the server(s) they are being served by |
| // should go down. |
| |
| public static final String BASE_NAMESPACE_DIR = "data"; |
| |
| /** delimiter used between portions of a region name */ |
| public static final int META_ROW_DELIMITER = ','; |
| |
| /** The catalog family as a string*/ |
| public static final String CATALOG_FAMILY_STR = "info"; |
| |
| /** The catalog family */ |
| public static final byte [] CATALOG_FAMILY = Bytes.toBytes(CATALOG_FAMILY_STR); |
| |
| /** The RegionInfo qualifier as a string */ |
| public static final String REGIONINFO_QUALIFIER_STR = "regioninfo"; |
| |
| /** The regioninfo column qualifier */ |
| public static final byte [] REGIONINFO_QUALIFIER = Bytes.toBytes(REGIONINFO_QUALIFIER_STR); |
| |
| /** The server column qualifier */ |
| public static final String SERVER_QUALIFIER_STR = "server"; |
| /** The server column qualifier */ |
| public static final byte [] SERVER_QUALIFIER = Bytes.toBytes(SERVER_QUALIFIER_STR); |
| |
| /** The startcode column qualifier */ |
| public static final String STARTCODE_QUALIFIER_STR = "serverstartcode"; |
| /** The startcode column qualifier */ |
| public static final byte [] STARTCODE_QUALIFIER = Bytes.toBytes(STARTCODE_QUALIFIER_STR); |
| |
| /** The open seqnum column qualifier */ |
| public static final String SEQNUM_QUALIFIER_STR = "seqnumDuringOpen"; |
| /** The open seqnum column qualifier */ |
| public static final byte [] SEQNUM_QUALIFIER = Bytes.toBytes(SEQNUM_QUALIFIER_STR); |
| |
| /** The state column qualifier */ |
| public static final String STATE_QUALIFIER_STR = "state"; |
| |
| public static final byte [] STATE_QUALIFIER = Bytes.toBytes(STATE_QUALIFIER_STR); |
| |
| /** |
| * The serverName column qualifier. Its the server where the region is |
| * transitioning on, while column server is the server where the region is |
| * opened on. They are the same when the region is in state OPEN. |
| */ |
| public static final String SERVERNAME_QUALIFIER_STR = "sn"; |
| |
| public static final byte [] SERVERNAME_QUALIFIER = Bytes.toBytes(SERVERNAME_QUALIFIER_STR); |
| |
| /** The lower-half split region column qualifier string. */ |
| public static final String SPLITA_QUALIFIER_STR = "splitA"; |
| /** The lower-half split region column qualifier */ |
| public static final byte [] SPLITA_QUALIFIER = Bytes.toBytes(SPLITA_QUALIFIER_STR); |
| |
| /** The upper-half split region column qualifier String. */ |
| public static final String SPLITB_QUALIFIER_STR = "splitB"; |
| /** The upper-half split region column qualifier */ |
| public static final byte [] SPLITB_QUALIFIER = Bytes.toBytes(SPLITB_QUALIFIER_STR); |
| |
| /** |
| * Merge qualifier prefix. |
| * We used to only allow two regions merge; mergeA and mergeB. |
| * Now we allow many to merge. Each region to merge will be referenced |
| * in a column whose qualifier starts with this define. |
| */ |
| public static final String MERGE_QUALIFIER_PREFIX_STR = "merge"; |
| public static final byte [] MERGE_QUALIFIER_PREFIX = |
| Bytes.toBytes(MERGE_QUALIFIER_PREFIX_STR); |
| |
| /** |
| * The lower-half merge region column qualifier |
| * @deprecated Since 2.3.0 and 2.2.1. Not used anymore. Instead we look for |
| * the {@link #MERGE_QUALIFIER_PREFIX_STR} prefix. |
| */ |
| @Deprecated |
| public static final byte[] MERGEA_QUALIFIER = Bytes.toBytes(MERGE_QUALIFIER_PREFIX_STR + "A"); |
| |
| /** |
| * The upper-half merge region column qualifier |
| * @deprecated Since 2.3.0 and 2.2.1. Not used anymore. Instead we look for |
| * the {@link #MERGE_QUALIFIER_PREFIX_STR} prefix. |
| */ |
| @Deprecated |
| public static final byte[] MERGEB_QUALIFIER = Bytes.toBytes(MERGE_QUALIFIER_PREFIX_STR + "B"); |
| |
| /** The catalog family as a string*/ |
| public static final String TABLE_FAMILY_STR = "table"; |
| |
| /** The catalog family */ |
| public static final byte [] TABLE_FAMILY = Bytes.toBytes(TABLE_FAMILY_STR); |
| |
| /** The serialized table state qualifier */ |
| public static final byte[] TABLE_STATE_QUALIFIER = Bytes.toBytes("state"); |
| |
| /** The replication barrier family as a string*/ |
| public static final String REPLICATION_BARRIER_FAMILY_STR = "rep_barrier"; |
| |
| /** The replication barrier family */ |
| public static final byte[] REPLICATION_BARRIER_FAMILY = |
| Bytes.toBytes(REPLICATION_BARRIER_FAMILY_STR); |
| |
| /** The namespace family as a string */ |
| public static final String NAMESPACE_FAMILY_STR = "ns"; |
| |
| /** The namespace family */ |
| public static final byte[] NAMESPACE_FAMILY = Bytes.toBytes(NAMESPACE_FAMILY_STR); |
| |
| public static final byte[] NAMESPACE_COL_DESC_QUALIFIER = Bytes.toBytes("d"); |
| /** |
| * The meta table version column qualifier. |
| * We keep current version of the meta table in this column in <code>-ROOT-</code> |
| * table: i.e. in the 'info:v' column. |
| */ |
| public static final byte [] META_VERSION_QUALIFIER = Bytes.toBytes("v"); |
| |
| /** The family str as a key in map*/ |
| public static final String FAMILY_KEY_STR = "family"; |
| |
| /** |
| * The current version of the meta table. |
| * - pre-hbase 0.92. There is no META_VERSION column in the root table |
| * in this case. The meta has HTableDescriptor serialized into the HRegionInfo; |
| * - version 0 is 0.92 and 0.94. Meta data has serialized HRegionInfo's using |
| * Writable serialization, and HRegionInfo's does not contain HTableDescriptors. |
| * - version 1 for 0.96+ keeps HRegionInfo data structures, but changes the |
| * byte[] serialization from Writables to Protobuf. |
| * See HRegionInfo.VERSION |
| */ |
| public static final short META_VERSION = 1; |
| |
| // Other constants |
| |
| /** |
| * An empty byte array instance. |
| */ |
| public static final byte [] EMPTY_BYTE_ARRAY = new byte [0]; |
| |
| /** |
| * An empty string instance. |
| */ |
| public static final String EMPTY_STRING = ""; |
| |
| public static final ByteBuffer EMPTY_BYTE_BUFFER = ByteBuffer.wrap(EMPTY_BYTE_ARRAY); |
| |
| /** |
| * Used by scanners, etc when they want to start at the beginning of a region |
| */ |
| public static final byte [] EMPTY_START_ROW = EMPTY_BYTE_ARRAY; |
| |
| /** |
| * Last row in a table. |
| */ |
| public static final byte [] EMPTY_END_ROW = EMPTY_BYTE_ARRAY; |
| |
| /** |
| * Used by scanners and others when they're trying to detect the end of a |
| * table |
| */ |
| public static final byte [] LAST_ROW = EMPTY_BYTE_ARRAY; |
| |
| /** |
| * Max length a row can have because of the limitation in TFile. |
| */ |
| public static final int MAX_ROW_LENGTH = Short.MAX_VALUE; |
| |
| /** |
| * Timestamp to use when we want to refer to the latest cell. |
| * |
| * On client side, this is the timestamp set by default when no timestamp is specified, |
| * to refer to the latest. |
| * On server side, this acts as a notation. |
| * (1) For a cell of Put, which has this notation, |
| * its timestamp will be replaced with server's current time. |
| * (2) For a cell of Delete, which has this notation, |
| * A. If the cell is of {@link KeyValue.Type#Delete}, HBase issues a Get operation firstly. |
| * a. When the count of cell it gets is less than the count of cell to delete, |
| * the timestamp of Delete cell will be replaced with server's current time. |
| * b. When the count of cell it gets is equal to the count of cell to delete, |
| * the timestamp of Delete cell will be replaced with the latest timestamp of cell it |
| * gets. |
| * (c. It is invalid and an exception will be thrown, |
| * if the count of cell it gets is greater than the count of cell to delete, |
| * as the max version of Get is set to the count of cell to delete.) |
| * B. If the cell is of other Delete types, like {@link KeyValue.Type#DeleteFamilyVersion}, |
| * {@link KeyValue.Type#DeleteColumn}, or {@link KeyValue.Type#DeleteFamily}, |
| * the timestamp of Delete cell will be replaced with server's current time. |
| * |
| * So that is why it is named as "latest" but assigned as the max value of Long. |
| */ |
| public static final long LATEST_TIMESTAMP = Long.MAX_VALUE; |
| |
| /** |
| * LATEST_TIMESTAMP in bytes form |
| */ |
| public static final byte [] LATEST_TIMESTAMP_BYTES = { |
| // big-endian |
| (byte) (LATEST_TIMESTAMP >>> 56), |
| (byte) (LATEST_TIMESTAMP >>> 48), |
| (byte) (LATEST_TIMESTAMP >>> 40), |
| (byte) (LATEST_TIMESTAMP >>> 32), |
| (byte) (LATEST_TIMESTAMP >>> 24), |
| (byte) (LATEST_TIMESTAMP >>> 16), |
| (byte) (LATEST_TIMESTAMP >>> 8), |
| (byte) LATEST_TIMESTAMP, |
| }; |
| |
| /** |
| * Define for 'return-all-versions'. |
| */ |
| public static final int ALL_VERSIONS = Integer.MAX_VALUE; |
| |
| /** |
| * Unlimited time-to-live. |
| */ |
| // public static final int FOREVER = -1; |
| public static final int FOREVER = Integer.MAX_VALUE; |
| |
| /** |
| * Seconds in a day, hour and minute |
| */ |
| public static final int DAY_IN_SECONDS = 24 * 60 * 60; |
| public static final int HOUR_IN_SECONDS = 60 * 60; |
| public static final int MINUTE_IN_SECONDS = 60; |
| |
| /** |
| * KB, MB, GB, TB equivalent to how many bytes |
| */ |
| public static final long KB_IN_BYTES = 1024; |
| public static final long MB_IN_BYTES = 1024 * KB_IN_BYTES; |
| public static final long GB_IN_BYTES = 1024 * MB_IN_BYTES; |
| public static final long TB_IN_BYTES = 1024 * GB_IN_BYTES; |
| |
| //TODO: although the following are referenced widely to format strings for |
| // the shell. They really aren't a part of the public API. It would be |
| // nice if we could put them somewhere where they did not need to be |
| // public. They could have package visibility |
| public static final String NAME = "NAME"; |
| public static final String VERSIONS = "VERSIONS"; |
| public static final String IN_MEMORY = "IN_MEMORY"; |
| public static final String METADATA = "METADATA"; |
| public static final String CONFIGURATION = "CONFIGURATION"; |
| |
| /** |
| * Retrying we multiply hbase.client.pause setting by what we have in this array until we |
| * run out of array items. Retries beyond this use the last number in the array. So, for |
| * example, if hbase.client.pause is 1 second, and maximum retries count |
| * hbase.client.retries.number is 10, we will retry at the following intervals: |
| * 1, 2, 3, 5, 10, 20, 40, 100, 100, 100. |
| * With 100ms, a back-off of 200 means 20s |
| */ |
| public static final int [] RETRY_BACKOFF = {1, 2, 3, 5, 10, 20, 40, 100, 100, 100, 100, 200, 200}; |
| |
| public static final String REGION_IMPL = "hbase.hregion.impl"; |
| |
| /** |
| * Scope tag for locally scoped data. |
| * This data will not be replicated. |
| */ |
| public static final int REPLICATION_SCOPE_LOCAL = 0; |
| |
| /** |
| * Scope tag for globally scoped data. |
| * This data will be replicated to all peers. |
| */ |
| public static final int REPLICATION_SCOPE_GLOBAL = 1; |
| |
| /** |
| * Default cluster ID, cannot be used to identify a cluster so a key with |
| * this value means it wasn't meant for replication. |
| */ |
| public static final UUID DEFAULT_CLUSTER_ID = new UUID(0L,0L); |
| |
| /** |
| * Parameter name for maximum number of bytes returned when calling a scanner's next method. |
| * Controlled by the client. |
| */ |
| public static final String HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE_KEY = |
| "hbase.client.scanner.max.result.size"; |
| |
| /** |
| * Parameter name for maximum number of bytes returned when calling a scanner's next method. |
| * Controlled by the server. |
| */ |
| public static final String HBASE_SERVER_SCANNER_MAX_RESULT_SIZE_KEY = |
| "hbase.server.scanner.max.result.size"; |
| |
| /** |
| * Maximum number of bytes returned when calling a scanner's next method. |
| * Note that when a single row is larger than this limit the row is still |
| * returned completely. |
| * |
| * The default value is 2MB. |
| */ |
| public static final long DEFAULT_HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE = 2 * 1024 * 1024; |
| |
| /** |
| * Maximum number of bytes returned when calling a scanner's next method. |
| * Note that when a single row is larger than this limit the row is still |
| * returned completely. |
| * Safety setting to protect the region server. |
| * |
| * The default value is 100MB. (a client would rarely request larger chunks on purpose) |
| */ |
| public static final long DEFAULT_HBASE_SERVER_SCANNER_MAX_RESULT_SIZE = 100 * 1024 * 1024; |
| |
| /** |
| * Parameter name for client pause value, used mostly as value to wait |
| * before running a retry of a failed get, region lookup, etc. |
| */ |
| public static final String HBASE_CLIENT_PAUSE = "hbase.client.pause"; |
| |
| /** |
| * Default value of {@link #HBASE_CLIENT_PAUSE}. |
| */ |
| public static final long DEFAULT_HBASE_CLIENT_PAUSE = 100; |
| |
| /** |
| * Parameter name for client pause value for special case such as call queue too big, etc. |
| */ |
| public static final String HBASE_CLIENT_PAUSE_FOR_CQTBE = "hbase.client.pause.cqtbe"; |
| |
| /** |
| * The maximum number of concurrent connections the client will maintain. |
| */ |
| public static final String HBASE_CLIENT_MAX_TOTAL_TASKS = "hbase.client.max.total.tasks"; |
| |
| /** |
| * Default value of {@link #HBASE_CLIENT_MAX_TOTAL_TASKS}. |
| */ |
| public static final int DEFAULT_HBASE_CLIENT_MAX_TOTAL_TASKS = 100; |
| |
| /** |
| * The maximum number of concurrent connections the client will maintain to a single |
| * RegionServer. |
| */ |
| public static final String HBASE_CLIENT_MAX_PERSERVER_TASKS = "hbase.client.max.perserver.tasks"; |
| |
| /** |
| * Default value of {@link #HBASE_CLIENT_MAX_PERSERVER_TASKS}. |
| */ |
| public static final int DEFAULT_HBASE_CLIENT_MAX_PERSERVER_TASKS = 2; |
| |
| /** |
| * The maximum number of concurrent connections the client will maintain to a single |
| * Region. |
| */ |
| public static final String HBASE_CLIENT_MAX_PERREGION_TASKS = "hbase.client.max.perregion.tasks"; |
| |
| /** |
| * Default value of {@link #HBASE_CLIENT_MAX_PERREGION_TASKS}. |
| */ |
| public static final int DEFAULT_HBASE_CLIENT_MAX_PERREGION_TASKS = 1; |
| |
| /** |
| * The maximum number of concurrent pending RPC requests for one server in process level. |
| */ |
| public static final String HBASE_CLIENT_PERSERVER_REQUESTS_THRESHOLD = |
| "hbase.client.perserver.requests.threshold"; |
| |
| /** |
| * Default value of {@link #HBASE_CLIENT_PERSERVER_REQUESTS_THRESHOLD}. |
| */ |
| public static final int DEFAULT_HBASE_CLIENT_PERSERVER_REQUESTS_THRESHOLD = Integer.MAX_VALUE; |
| |
| |
| /** |
| * Parameter name for server pause value, used mostly as value to wait before |
| * running a retry of a failed operation. |
| */ |
| public static final String HBASE_SERVER_PAUSE = "hbase.server.pause"; |
| |
| /** |
| * Default value of {@link #HBASE_SERVER_PAUSE}. |
| */ |
| public static final int DEFAULT_HBASE_SERVER_PAUSE = 1000; |
| |
| /** |
| * Parameter name for maximum retries, used as maximum for all retryable |
| * operations such as fetching of the root region from root region server, |
| * getting a cell's value, starting a row update, etc. |
| */ |
| public static final String HBASE_CLIENT_RETRIES_NUMBER = "hbase.client.retries.number"; |
| |
| /** |
| * Default value of {@link #HBASE_CLIENT_RETRIES_NUMBER}. |
| */ |
| public static final int DEFAULT_HBASE_CLIENT_RETRIES_NUMBER = 15; |
| |
| public static final String HBASE_CLIENT_SERVERSIDE_RETRIES_MULTIPLIER = |
| "hbase.client.serverside.retries.multiplier"; |
| |
| public static final int DEFAULT_HBASE_CLIENT_SERVERSIDE_RETRIES_MULTIPLIER = 3; |
| |
| /** |
| * Parameter name to set the default scanner caching for all clients. |
| */ |
| public static final String HBASE_CLIENT_SCANNER_CACHING = "hbase.client.scanner.caching"; |
| |
| /** |
| * Default value for {@link #HBASE_CLIENT_SCANNER_CACHING} |
| */ |
| public static final int DEFAULT_HBASE_CLIENT_SCANNER_CACHING = Integer.MAX_VALUE; |
| |
| /** |
| * Parameter name for number of rows that will be fetched when calling next on |
| * a scanner if it is not served from memory. Higher caching values will |
| * enable faster scanners but will eat up more memory and some calls of next |
| * may take longer and longer times when the cache is empty. |
| */ |
| public static final String HBASE_META_SCANNER_CACHING = "hbase.meta.scanner.caching"; |
| |
| /** |
| * Default value of {@link #HBASE_META_SCANNER_CACHING}. |
| */ |
| public static final int DEFAULT_HBASE_META_SCANNER_CACHING = 100; |
| |
| /** |
| * Parameter name for number of versions, kept by meta table. |
| */ |
| public static final String HBASE_META_VERSIONS = "hbase.meta.versions"; |
| |
| /** |
| * Default value of {@link #HBASE_META_VERSIONS}. |
| */ |
| public static final int DEFAULT_HBASE_META_VERSIONS = 3; |
| |
| /** |
| * Parameter name for number of versions, kept by meta table. |
| */ |
| public static final String HBASE_META_BLOCK_SIZE = "hbase.meta.blocksize"; |
| |
| /** |
| * Default value of {@link #HBASE_META_BLOCK_SIZE}. |
| */ |
| public static final int DEFAULT_HBASE_META_BLOCK_SIZE = 8 * 1024; |
| |
| /** |
| * Parameter name for unique identifier for this {@link org.apache.hadoop.conf.Configuration} |
| * instance. If there are two or more {@link org.apache.hadoop.conf.Configuration} instances that, |
| * for all intents and purposes, are the same except for their instance ids, then they will not be |
| * able to share the same org.apache.hadoop.hbase.client.HConnection instance. On the other hand, |
| * even if the instance ids are the same, it could result in non-shared |
| * org.apache.hadoop.hbase.client.HConnection instances if some of the other connection parameters |
| * differ. |
| */ |
| public static final String HBASE_CLIENT_INSTANCE_ID = "hbase.client.instance.id"; |
| |
| /** |
| * The client scanner timeout period in milliseconds. |
| */ |
| public static final String HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD = |
| "hbase.client.scanner.timeout.period"; |
| |
| /** |
| * Default value of {@link #HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD}. |
| */ |
| public static final int DEFAULT_HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD = 60000; |
| |
| /** |
| * timeout for each RPC |
| */ |
| public static final String HBASE_RPC_TIMEOUT_KEY = "hbase.rpc.timeout"; |
| |
| /** |
| * timeout for each read RPC |
| */ |
| public static final String HBASE_RPC_READ_TIMEOUT_KEY = "hbase.rpc.read.timeout"; |
| |
| /** |
| * timeout for each write RPC |
| */ |
| public static final String HBASE_RPC_WRITE_TIMEOUT_KEY = "hbase.rpc.write.timeout"; |
| |
| /** |
| * Default value of {@link #HBASE_RPC_TIMEOUT_KEY} |
| */ |
| public static final int DEFAULT_HBASE_RPC_TIMEOUT = 60000; |
| |
| /** |
| * timeout for short operation RPC |
| */ |
| public static final String HBASE_RPC_SHORTOPERATION_TIMEOUT_KEY = |
| "hbase.rpc.shortoperation.timeout"; |
| |
| /** |
| * Default value of {@link #HBASE_RPC_SHORTOPERATION_TIMEOUT_KEY} |
| */ |
| public static final int DEFAULT_HBASE_RPC_SHORTOPERATION_TIMEOUT = 10000; |
| |
| /** |
| * Retry pause time for short operation RPC |
| */ |
| public static final String HBASE_RPC_SHORTOPERATION_RETRY_PAUSE_TIME = |
| "hbase.rpc.shortoperation.retry.pause.time"; |
| |
| /** |
| * Default value of {@link #HBASE_RPC_SHORTOPERATION_RETRY_PAUSE_TIME} |
| */ |
| public static final long DEFAULT_HBASE_RPC_SHORTOPERATION_RETRY_PAUSE_TIME = 1000; |
| |
| /** |
| * Value indicating the server name was saved with no sequence number. |
| */ |
| public static final long NO_SEQNUM = -1; |
| |
| /** |
| * Registry implementation to be used on the client side. |
| */ |
| public static final String CLIENT_CONNECTION_REGISTRY_IMPL_CONF_KEY = |
| "hbase.client.registry.impl"; |
| |
| /* |
| * cluster replication constants. |
| */ |
| public static final String |
| REPLICATION_SOURCE_SERVICE_CLASSNAME = "hbase.replication.source.service"; |
| public static final String REPLICATION_SERVICE_CLASSNAME_DEFAULT = |
| "org.apache.hadoop.hbase.replication.regionserver.Replication"; |
| public static final String |
| REPLICATION_SINK_SERVICE_CLASSNAME = "hbase.replication.sink.service"; |
| public static final String REPLICATION_SINK_SERVICE_CLASSNAME_DEFAULT = |
| "org.apache.hadoop.hbase.replication.ReplicationSinkServiceImpl"; |
| public static final String REPLICATION_BULKLOAD_ENABLE_KEY = "hbase.replication.bulkload.enabled"; |
| public static final boolean REPLICATION_BULKLOAD_ENABLE_DEFAULT = false; |
| /** Replication cluster id of source cluster which uniquely identifies itself with peer cluster */ |
| public static final String REPLICATION_CLUSTER_ID = "hbase.replication.cluster.id"; |
| /** |
| * Max total size of buffered entries in all replication peers. It will prevent server getting |
| * OOM if there are many peers. Default value is 256MB which is four times to default |
| * replication.source.size.capacity. |
| */ |
| public static final String REPLICATION_SOURCE_TOTAL_BUFFER_KEY = "replication.total.buffer.quota"; |
| |
| public static final int REPLICATION_SOURCE_TOTAL_BUFFER_DFAULT = 256 * 1024 * 1024; |
| |
| /** Configuration key for ReplicationSource shipeEdits timeout */ |
| public static final String REPLICATION_SOURCE_SHIPEDITS_TIMEOUT = |
| "replication.source.shipedits.timeout"; |
| public static final int REPLICATION_SOURCE_SHIPEDITS_TIMEOUT_DFAULT = 60000; |
| |
| /** |
| * Directory where the source cluster file system client configuration are placed which is used by |
| * sink cluster to copy HFiles from source cluster file system |
| */ |
| public static final String REPLICATION_CONF_DIR = "hbase.replication.conf.dir"; |
| |
| /** Maximum time to retry for a failed bulk load request */ |
| public static final String BULKLOAD_MAX_RETRIES_NUMBER = "hbase.bulkload.retries.number"; |
| |
| public static final String KEY_FOR_HOSTNAME_SEEN_BY_MASTER = |
| "hbase.regionserver.hostname.seen.by.master"; |
| |
| public static final String HBASE_MASTER_LOGCLEANER_PLUGINS = |
| "hbase.master.logcleaner.plugins"; |
| |
| public static final String HBASE_REGION_SPLIT_POLICY_KEY = |
| "hbase.regionserver.region.split.policy"; |
| |
| /** Whether nonces are enabled; default is true. */ |
| public static final String HBASE_RS_NONCES_ENABLED = "hbase.regionserver.nonces.enabled"; |
| |
| /** |
| * Configuration key for the size of the block cache |
| */ |
| public static final String HFILE_BLOCK_CACHE_SIZE_KEY = |
| "hfile.block.cache.size"; |
| |
| public static final float HFILE_BLOCK_CACHE_SIZE_DEFAULT = 0.4f; |
| |
| /* |
| * Minimum percentage of free heap necessary for a successful cluster startup. |
| */ |
| public static final float HBASE_CLUSTER_MINIMUM_MEMORY_THRESHOLD = 0.2f; |
| |
| |
| public static final String CP_HTD_ATTR_INCLUSION_KEY = |
| "hbase.coprocessor.classloader.included.classes"; |
| |
| /** The delay when re-trying a socket operation in a loop (HBASE-4712) */ |
| public static final int SOCKET_RETRY_WAIT_MS = 200; |
| |
| /** Host name of the local machine */ |
| public static final String LOCALHOST = "localhost"; |
| |
| /** |
| * If this parameter is set to true, then hbase will read |
| * data and then verify checksums. Checksum verification |
| * inside hdfs will be switched off. However, if the hbase-checksum |
| * verification fails, then it will switch back to using |
| * hdfs checksums for verifiying data that is being read from storage. |
| * |
| * If this parameter is set to false, then hbase will not |
| * verify any checksums, instead it will depend on checksum verification |
| * being done in the hdfs client. |
| */ |
| public static final String HBASE_CHECKSUM_VERIFICATION = |
| "hbase.regionserver.checksum.verify"; |
| |
| public static final String LOCALHOST_IP = "127.0.0.1"; |
| |
| public static final String REGION_SERVER_HANDLER_COUNT = "hbase.regionserver.handler.count"; |
| public static final int DEFAULT_REGION_SERVER_HANDLER_COUNT = 30; |
| |
| /* |
| * REGION_SERVER_HANDLER_ABORT_ON_ERROR_PERCENT: |
| * -1 => Disable aborting |
| * 0 => Abort if even a single handler has died |
| * 0.x => Abort only when this percent of handlers have died |
| * 1 => Abort only all of the handers have died |
| */ |
| public static final String REGION_SERVER_HANDLER_ABORT_ON_ERROR_PERCENT = |
| "hbase.regionserver.handler.abort.on.error.percent"; |
| public static final double DEFAULT_REGION_SERVER_HANDLER_ABORT_ON_ERROR_PERCENT = 0.5; |
| |
| //High priority handlers to deal with admin requests and system table operation requests |
| public static final String REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT = |
| "hbase.regionserver.metahandler.count"; |
| public static final int DEFAULT_REGION_SERVER_HIGH_PRIORITY_HANDLER_COUNT = 20; |
| |
| public static final String REGION_SERVER_REPLICATION_HANDLER_COUNT = |
| "hbase.regionserver.replication.handler.count"; |
| public static final int DEFAULT_REGION_SERVER_REPLICATION_HANDLER_COUNT = 3; |
| // Meta Transition handlers to deal with meta ReportRegionStateTransitionRequest. Meta transition |
| // should be dealt with in a separate handler in case blocking other region's transition. |
| public static final String MASTER_META_TRANSITION_HANDLER_COUNT = |
| "hbase.master.meta.transition.handler.count"; |
| public static final int MASTER__META_TRANSITION_HANDLER_COUNT_DEFAULT = 1; |
| |
| /** Conf key for enabling meta replication */ |
| public static final String USE_META_REPLICAS = "hbase.meta.replicas.use"; |
| public static final boolean DEFAULT_USE_META_REPLICAS = false; |
| |
| /** |
| * @deprecated Since 2.4.0, will be removed in 4.0.0. Please change the meta replicas number by |
| * altering meta table, i.e, set a new 'region replication' number and call |
| * modifyTable. |
| */ |
| @Deprecated |
| public static final String META_REPLICAS_NUM = "hbase.meta.replica.count"; |
| /** |
| * @deprecated Since 2.4.0, will be removed in 4.0.0. Please change the meta replicas number by |
| * altering meta table, i.e, set a new 'region replication' number and call |
| * modifyTable. |
| */ |
| @Deprecated |
| public static final int DEFAULT_META_REPLICA_NUM = 1; |
| |
| /** |
| * The name of the configuration parameter that specifies |
| * the number of bytes in a newly created checksum chunk. |
| */ |
| public static final String BYTES_PER_CHECKSUM = |
| "hbase.hstore.bytes.per.checksum"; |
| |
| /** |
| * The name of the configuration parameter that specifies |
| * the name of an algorithm that is used to compute checksums |
| * for newly created blocks. |
| */ |
| public static final String CHECKSUM_TYPE_NAME = |
| "hbase.hstore.checksum.algorithm"; |
| |
| /** Enable file permission modification from standard hbase */ |
| public static final String ENABLE_DATA_FILE_UMASK = "hbase.data.umask.enable"; |
| /** File permission umask to use when creating hbase data files */ |
| public static final String DATA_FILE_UMASK_KEY = "hbase.data.umask"; |
| |
| /** Configuration name of WAL Compression */ |
| public static final String ENABLE_WAL_COMPRESSION = |
| "hbase.regionserver.wal.enablecompression"; |
| |
| /** Configuration name of WAL storage policy |
| * Valid values are: HOT, COLD, WARM, ALL_SSD, ONE_SSD, LAZY_PERSIST |
| * See http://hadoop.apache.org/docs/r2.7.3/hadoop-project-dist/hadoop-hdfs/ArchivalStorage.html*/ |
| public static final String WAL_STORAGE_POLICY = "hbase.wal.storage.policy"; |
| /** |
| * "NONE" is not a valid storage policy and means we defer the policy to HDFS. @see |
| * <a href="https://issues.apache.org/jira/browse/HBASE-20691">HBASE-20691</a> |
| */ |
| public static final String DEFER_TO_HDFS_STORAGE_POLICY = "NONE"; |
| /** By default we defer the WAL storage policy to HDFS */ |
| public static final String DEFAULT_WAL_STORAGE_POLICY = DEFER_TO_HDFS_STORAGE_POLICY; |
| |
| /** Region in Transition metrics threshold time */ |
| public static final String METRICS_RIT_STUCK_WARNING_THRESHOLD = |
| "hbase.metrics.rit.stuck.warning.threshold"; |
| |
| public static final String LOAD_BALANCER_SLOP_KEY = "hbase.regions.slop"; |
| |
| /** delimiter used between portions of a region name */ |
| public static final int DELIMITER = ','; |
| |
| /** |
| * QOS attributes: these attributes are used to demarcate RPC call processing |
| * by different set of handlers. For example, HIGH_QOS tagged methods are |
| * handled by high priority handlers. |
| */ |
| // normal_QOS < replication_QOS < replay_QOS < QOS_threshold < admin_QOS < high_QOS < meta_QOS |
| public static final int PRIORITY_UNSET = -1; |
| public static final int NORMAL_QOS = 0; |
| public static final int REPLICATION_QOS = 5; |
| public static final int REPLAY_QOS = 6; |
| public static final int QOS_THRESHOLD = 10; |
| public static final int ADMIN_QOS = 100; |
| public static final int HIGH_QOS = 200; |
| public static final int SYSTEMTABLE_QOS = HIGH_QOS; |
| |
| /** Directory under /hbase where archived hfiles are stored */ |
| public static final String HFILE_ARCHIVE_DIRECTORY = "archive"; |
| |
| /** |
| * Name of the directory to store all snapshots. See SnapshotDescriptionUtils for |
| * remaining snapshot constants; this is here to keep HConstants dependencies at a minimum and |
| * uni-directional. |
| */ |
| public static final String SNAPSHOT_DIR_NAME = ".hbase-snapshot"; |
| |
| /* Name of old snapshot directory. See HBASE-8352 for details on why it needs to be renamed */ |
| public static final String OLD_SNAPSHOT_DIR_NAME = ".snapshot"; |
| |
| /** Temporary directory used for table creation and deletion */ |
| public static final String HBASE_TEMP_DIRECTORY = ".tmp"; |
| /** |
| * The period (in milliseconds) between computing region server point in time metrics |
| */ |
| public static final String REGIONSERVER_METRICS_PERIOD = "hbase.regionserver.metrics.period"; |
| public static final long DEFAULT_REGIONSERVER_METRICS_PERIOD = 5000; |
| /** Directories that are not HBase table directories */ |
| public static final List<String> HBASE_NON_TABLE_DIRS = |
| Collections.unmodifiableList(Arrays.asList(new String[] { |
| HBCK_SIDELINEDIR_NAME, HBASE_TEMP_DIRECTORY, MIGRATION_NAME |
| })); |
| |
| /** |
| * Directories that are not HBase user table directories. |
| * @deprecated Since hbase-2.3.0; no replacement as not used any more (internally at least) |
| */ |
| @Deprecated |
| public static final List<String> HBASE_NON_USER_TABLE_DIRS = |
| Collections.unmodifiableList(Arrays.asList((String[])ArrayUtils.addAll( |
| new String[] { TableName.META_TABLE_NAME.getNameAsString() }, |
| HBASE_NON_TABLE_DIRS.toArray()))); |
| |
| /** Health script related settings. */ |
| public static final String HEALTH_SCRIPT_LOC = "hbase.node.health.script.location"; |
| public static final String HEALTH_SCRIPT_TIMEOUT = "hbase.node.health.script.timeout"; |
| public static final String HEALTH_CHORE_WAKE_FREQ = |
| "hbase.node.health.script.frequency"; |
| public static final long DEFAULT_HEALTH_SCRIPT_TIMEOUT = 60000; |
| /** |
| * The maximum number of health check failures a server can encounter consecutively. |
| */ |
| public static final String HEALTH_FAILURE_THRESHOLD = |
| "hbase.node.health.failure.threshold"; |
| public static final int DEFAULT_HEALTH_FAILURE_THRESHOLD = 3; |
| |
| public static final String EXECUTOR_STATUS_COLLECT_ENABLED = |
| "hbase.executors.status.collect.enabled"; |
| public static final boolean DEFAULT_EXECUTOR_STATUS_COLLECT_ENABLED = true; |
| |
| /** |
| * Setting to activate, or not, the publication of the status by the master. Default |
| * notification is by a multicast message. |
| */ |
| public static final String STATUS_PUBLISHED = "hbase.status.published"; |
| public static final boolean STATUS_PUBLISHED_DEFAULT = false; |
| |
| /** |
| * IP to use for the multicast status messages between the master and the clients. |
| * The default address is chosen as one among others within the ones suitable for multicast |
| * messages. |
| */ |
| public static final String STATUS_MULTICAST_ADDRESS = "hbase.status.multicast.address.ip"; |
| public static final String DEFAULT_STATUS_MULTICAST_ADDRESS = "226.1.1.3"; |
| |
| /** |
| * The address to use for binding the local socket for receiving multicast. Defaults to |
| * 0.0.0.0. |
| * @see <a href="https://issues.apache.org/jira/browse/HBASE-9961">HBASE-9961</a> |
| */ |
| public static final String STATUS_MULTICAST_BIND_ADDRESS = |
| "hbase.status.multicast.bind.address.ip"; |
| public static final String DEFAULT_STATUS_MULTICAST_BIND_ADDRESS = "0.0.0.0"; |
| |
| /** |
| * The port to use for the multicast messages. |
| */ |
| public static final String STATUS_MULTICAST_PORT = "hbase.status.multicast.address.port"; |
| public static final int DEFAULT_STATUS_MULTICAST_PORT = 16100; |
| |
| /** |
| * The network interface name to use for the multicast messages. |
| */ |
| public static final String STATUS_MULTICAST_NI_NAME = "hbase.status.multicast.ni.name"; |
| |
| /** |
| * The address to use for binding the local socket for sending multicast. Defaults to 0.0.0.0. |
| */ |
| public static final String STATUS_MULTICAST_PUBLISHER_BIND_ADDRESS = |
| "hbase.status.multicast.publisher.bind.address.ip"; |
| public static final String DEFAULT_STATUS_MULTICAST_PUBLISHER_BIND_ADDRESS = "0.0.0.0"; |
| |
| public static final long NO_NONCE = 0; |
| |
| /** Default cipher for encryption */ |
| public static final String CIPHER_AES = "AES"; |
| |
| /** Configuration key for the crypto algorithm provider, a class name */ |
| public static final String CRYPTO_CIPHERPROVIDER_CONF_KEY = "hbase.crypto.cipherprovider"; |
| |
| /** Configuration key for the crypto key provider, a class name */ |
| public static final String CRYPTO_KEYPROVIDER_CONF_KEY = "hbase.crypto.keyprovider"; |
| |
| /** Configuration key for the crypto key provider parameters */ |
| public static final String CRYPTO_KEYPROVIDER_PARAMETERS_KEY = |
| "hbase.crypto.keyprovider.parameters"; |
| |
| /** Configuration key for the name of the master key for the cluster, a string */ |
| public static final String CRYPTO_MASTERKEY_NAME_CONF_KEY = "hbase.crypto.master.key.name"; |
| |
| /** Configuration key for the name of the alternate master key for the cluster, a string */ |
| public static final String CRYPTO_MASTERKEY_ALTERNATE_NAME_CONF_KEY = |
| "hbase.crypto.master.alternate.key.name"; |
| |
| /** Configuration key for the algorithm to use when encrypting the WAL, a string */ |
| public static final String CRYPTO_WAL_ALGORITHM_CONF_KEY = "hbase.crypto.wal.algorithm"; |
| |
| /** Configuration key for the name of the master WAL encryption key for the cluster, a string */ |
| public static final String CRYPTO_WAL_KEY_NAME_CONF_KEY = "hbase.crypto.wal.key.name"; |
| |
| /** Configuration key for the algorithm used for creating jks key, a string */ |
| public static final String CRYPTO_KEY_ALGORITHM_CONF_KEY = "hbase.crypto.key.algorithm"; |
| |
| /** Configuration key for the name of the alternate cipher algorithm for the cluster, a string */ |
| public static final String CRYPTO_ALTERNATE_KEY_ALGORITHM_CONF_KEY = |
| "hbase.crypto.alternate.key.algorithm"; |
| |
| /** Configuration key for enabling WAL encryption, a boolean */ |
| public static final String ENABLE_WAL_ENCRYPTION = "hbase.regionserver.wal.encryption"; |
| |
| /** Configuration key for setting RPC codec class name */ |
| public static final String RPC_CODEC_CONF_KEY = "hbase.client.rpc.codec"; |
| |
| /** Configuration key for setting replication codec class name */ |
| public static final String REPLICATION_CODEC_CONF_KEY = "hbase.replication.rpc.codec"; |
| |
| /** Maximum number of threads used by the replication source for shipping edits to the sinks */ |
| public static final String REPLICATION_SOURCE_MAXTHREADS_KEY = |
| "hbase.replication.source.maxthreads"; |
| |
| /** |
| * Drop edits for tables that been deleted from the replication source and target |
| * @deprecated since 3.0.0. Will be removed in 4.0.0. |
| * Moved it into HBaseInterClusterReplicationEndpoint. |
| * @see <a href="https://issues.apache.org/jira/browse/HBASE-24359">HBASE-24359</a> |
| */ |
| @Deprecated |
| public static final String REPLICATION_DROP_ON_DELETED_TABLE_KEY = |
| "hbase.replication.drop.on.deleted.table"; |
| |
| /** Maximum number of threads used by the replication source for shipping edits to the sinks */ |
| public static final int REPLICATION_SOURCE_MAXTHREADS_DEFAULT = 10; |
| |
| /** Configuration key for SplitLog manager timeout */ |
| public static final String HBASE_SPLITLOG_MANAGER_TIMEOUT = "hbase.splitlog.manager.timeout"; |
| |
| /** |
| * Configuration keys for Bucket cache |
| */ |
| // TODO moving these bucket cache implementation specific configs to this level is violation of |
| // encapsulation. But as these has to be referred from hbase-common and bucket cache |
| // sits in hbase-server, there were no other go! Can we move the cache implementation to |
| // hbase-common? |
| |
| /** |
| * Current ioengine options in include: heap, offheap and file:PATH (where PATH is the path |
| * to the file that will host the file-based cache. See BucketCache#getIOEngineFromName() for |
| * list of supported ioengine options. |
| * <p>Set this option and a non-zero {@link #BUCKET_CACHE_SIZE_KEY} to enable bucket cache. |
| */ |
| public static final String BUCKET_CACHE_IOENGINE_KEY = "hbase.bucketcache.ioengine"; |
| |
| /** |
| * When using bucket cache, it is the capacity in megabytes of the cache. |
| */ |
| public static final String BUCKET_CACHE_SIZE_KEY = "hbase.bucketcache.size"; |
| |
| /** |
| * HConstants for fast fail on the client side follow |
| */ |
| /** |
| * Config for enabling/disabling the fast fail mode. |
| * @deprecated since 2.3.0, and in 3.0.0 the actually implementation will be removed so config |
| * this value will have no effect. The constants itself will be removed in 4.0.0. |
| */ |
| @Deprecated |
| public static final String HBASE_CLIENT_FAST_FAIL_MODE_ENABLED = |
| "hbase.client.fast.fail.mode.enabled"; |
| |
| /** |
| * @deprecated since 2.3.0, and in 3.0.0 the actually implementation will be removed so config |
| * this value will have no effect. The constants itself will be removed in 4.0.0. |
| */ |
| @Deprecated |
| public static final boolean HBASE_CLIENT_ENABLE_FAST_FAIL_MODE_DEFAULT = false; |
| |
| /** |
| * @deprecated since 2.3.0, and in 3.0.0 the actually implementation will be removed so config |
| * this value will have no effect. The constants itself will be removed in 4.0.0. |
| */ |
| @Deprecated |
| public static final String HBASE_CLIENT_FAST_FAIL_THREASHOLD_MS = |
| "hbase.client.fastfail.threshold"; |
| |
| /** |
| * @deprecated since 2.3.0, and in 3.0.0 the actually implementation will be removed so config |
| * this value will have no effect. The constants itself will be removed in 4.0.0. |
| */ |
| @Deprecated |
| public static final long HBASE_CLIENT_FAST_FAIL_THREASHOLD_MS_DEFAULT = 60000; |
| |
| /** |
| * @deprecated since 2.3.0, and in 3.0.0 the actually implementation will be removed so config |
| * this value will have no effect. The constants itself will be removed in 4.0.0. |
| */ |
| @Deprecated |
| public static final String HBASE_CLIENT_FAILURE_MAP_CLEANUP_INTERVAL_MS = |
| "hbase.client.failure.map.cleanup.interval"; |
| |
| /** |
| * @deprecated since 2.3.0, and in 3.0.0 the actually implementation will be removed so config |
| * this value will have no effect. The constants itself will be removed in 4.0.0. |
| */ |
| @Deprecated |
| public static final long HBASE_CLIENT_FAILURE_MAP_CLEANUP_INTERVAL_MS_DEFAULT = 600000; |
| |
| /** |
| * @deprecated since 2.3.0, and in 3.0.0 the actually implementation will be removed so config |
| * this value will have no effect. The constants itself will be removed in 4.0.0. |
| */ |
| @Deprecated |
| public static final String HBASE_CLIENT_FAST_FAIL_CLEANUP_MS_DURATION_MS = |
| "hbase.client.fast.fail.cleanup.duration"; |
| |
| /** |
| * @deprecated since 2.3.0, and in 3.0.0 the actually implementation will be removed so config |
| * this value will have no effect. The constants itself will be removed in 4.0.0. |
| */ |
| @Deprecated |
| public static final long HBASE_CLIENT_FAST_FAIL_CLEANUP_DURATION_MS_DEFAULT = 600000; |
| |
| /** |
| * @deprecated since 2.3.0, and in 3.0.0 the actually implementation will be removed so config |
| * this value will have no effect. The constants itself will be removed in 4.0.0. |
| */ |
| @Deprecated |
| public static final String HBASE_CLIENT_FAST_FAIL_INTERCEPTOR_IMPL = |
| "hbase.client.fast.fail.interceptor.impl"; |
| |
| /** |
| * @deprecated since 2.4.0 and in 3.0.0, to be removed in 4.0.0, replaced by procedure-based |
| * distributed WAL splitter; see SplitWALManager. |
| */ |
| @Deprecated |
| public static final String HBASE_SPLIT_WAL_COORDINATED_BY_ZK = "hbase.split.wal.zk.coordinated"; |
| |
| /** |
| * @deprecated since 2.4.0 and in 3.0.0, to be removed in 4.0.0. |
| */ |
| @Deprecated |
| public static final boolean DEFAULT_HBASE_SPLIT_COORDINATED_BY_ZK = false; |
| |
| public static final String HBASE_SPLIT_WAL_MAX_SPLITTER = "hbase.regionserver.wal.max.splitters"; |
| |
| public static final int DEFAULT_HBASE_SPLIT_WAL_MAX_SPLITTER = 2; |
| |
| /** Config key for if the server should send backpressure and if the client should listen to |
| * that backpressure from the server */ |
| public static final String ENABLE_CLIENT_BACKPRESSURE = "hbase.client.backpressure.enabled"; |
| public static final boolean DEFAULT_ENABLE_CLIENT_BACKPRESSURE = false; |
| |
| public static final String HEAP_OCCUPANCY_LOW_WATERMARK_KEY = |
| "hbase.heap.occupancy.low_water_mark"; |
| public static final float DEFAULT_HEAP_OCCUPANCY_LOW_WATERMARK = 0.95f; |
| public static final String HEAP_OCCUPANCY_HIGH_WATERMARK_KEY = |
| "hbase.heap.occupancy.high_water_mark"; |
| public static final float DEFAULT_HEAP_OCCUPANCY_HIGH_WATERMARK = 0.98f; |
| |
| /** |
| * The max number of threads used for splitting storefiles in parallel during |
| * the region split process. |
| */ |
| public static final String REGION_SPLIT_THREADS_MAX = |
| "hbase.regionserver.region.split.threads.max"; |
| |
| /** Canary config keys */ |
| // TODO: Move these defines to Canary Class |
| public static final String HBASE_CANARY_WRITE_DATA_TTL_KEY = "hbase.canary.write.data.ttl"; |
| |
| public static final String HBASE_CANARY_WRITE_PERSERVER_REGIONS_LOWERLIMIT_KEY = |
| "hbase.canary.write.perserver.regions.lowerLimit"; |
| |
| public static final String HBASE_CANARY_WRITE_PERSERVER_REGIONS_UPPERLIMIT_KEY = |
| "hbase.canary.write.perserver.regions.upperLimit"; |
| |
| public static final String HBASE_CANARY_WRITE_VALUE_SIZE_KEY = "hbase.canary.write.value.size"; |
| |
| public static final String HBASE_CANARY_WRITE_TABLE_CHECK_PERIOD_KEY = |
| "hbase.canary.write.table.check.period"; |
| |
| public static final String HBASE_CANARY_READ_RAW_SCAN_KEY = "hbase.canary.read.raw.enabled"; |
| |
| public static final String HBASE_CANARY_READ_ALL_CF = "hbase.canary.read.all.column.famliy"; |
| /** |
| * Configuration keys for programmatic JAAS configuration for secured ZK interaction |
| */ |
| public static final String ZK_CLIENT_KEYTAB_FILE = "hbase.zookeeper.client.keytab.file"; |
| public static final String ZK_CLIENT_KERBEROS_PRINCIPAL = |
| "hbase.zookeeper.client.kerberos.principal"; |
| public static final String ZK_SERVER_KEYTAB_FILE = "hbase.zookeeper.server.keytab.file"; |
| public static final String ZK_SERVER_KERBEROS_PRINCIPAL = |
| "hbase.zookeeper.server.kerberos.principal"; |
| |
| /** Config key for hbase temporary directory in hdfs */ |
| public static final String TEMPORARY_FS_DIRECTORY_KEY = "hbase.fs.tmp.dir"; |
| |
| /** |
| * Don't use it! This'll get you the wrong path in a secure cluster. |
| * Use FileSystem.getHomeDirectory() or |
| * "/user/" + UserGroupInformation.getCurrentUser().getShortUserName() |
| */ |
| public static final String DEFAULT_TEMPORARY_HDFS_DIRECTORY = "/user/" |
| + System.getProperty("user.name") + "/hbase-staging"; |
| |
| public static final String SNAPSHOT_RESTORE_TAKE_FAILSAFE_SNAPSHOT = |
| "hbase.snapshot.restore.take.failsafe.snapshot"; |
| public static final boolean DEFAULT_SNAPSHOT_RESTORE_TAKE_FAILSAFE_SNAPSHOT = true; |
| |
| public static final String SNAPSHOT_RESTORE_FAILSAFE_NAME = |
| "hbase.snapshot.restore.failsafe.name"; |
| public static final String DEFAULT_SNAPSHOT_RESTORE_FAILSAFE_NAME = |
| "hbase-failsafe-{snapshot.name}-{restore.timestamp}"; |
| |
| public static final String DEFAULT_LOSSY_COUNTING_ERROR_RATE = |
| "hbase.util.default.lossycounting.errorrate"; |
| public static final String NOT_IMPLEMENTED = "Not implemented"; |
| |
| // Default TTL - FOREVER |
| public static final long DEFAULT_SNAPSHOT_TTL = 0; |
| |
| // User defined Default TTL config key |
| public static final String DEFAULT_SNAPSHOT_TTL_CONFIG_KEY = "hbase.master.snapshot.ttl"; |
| |
| // Regions Recovery based on high storeFileRefCount threshold value |
| public static final String STORE_FILE_REF_COUNT_THRESHOLD = |
| "hbase.regions.recovery.store.file.ref.count"; |
| |
| // default -1 indicates there is no threshold on high storeRefCount |
| public static final int DEFAULT_STORE_FILE_REF_COUNT_THRESHOLD = -1; |
| |
| public static final String REGIONS_RECOVERY_INTERVAL = |
| "hbase.master.regions.recovery.check.interval"; |
| |
| public static final int DEFAULT_REGIONS_RECOVERY_INTERVAL = 1200 * 1000; // Default 20 min |
| |
| /** |
| * Configurations for master executor services. |
| */ |
| public static final String MASTER_OPEN_REGION_THREADS = |
| "hbase.master.executor.openregion.threads"; |
| public static final int MASTER_OPEN_REGION_THREADS_DEFAULT = 5; |
| |
| public static final String MASTER_CLOSE_REGION_THREADS = |
| "hbase.master.executor.closeregion.threads"; |
| public static final int MASTER_CLOSE_REGION_THREADS_DEFAULT = 5; |
| |
| public static final String MASTER_SERVER_OPERATIONS_THREADS = |
| "hbase.master.executor.serverops.threads"; |
| public static final int MASTER_SERVER_OPERATIONS_THREADS_DEFAULT = 5; |
| |
| /** |
| * Number of threads used to dispatch merge operations to the regionservers. |
| */ |
| public static final String MASTER_MERGE_DISPATCH_THREADS = |
| "hbase.master.executor.merge.dispatch.threads"; |
| public static final int MASTER_MERGE_DISPATCH_THREADS_DEFAULT = 2; |
| |
| public static final String MASTER_META_SERVER_OPERATIONS_THREADS = |
| "hbase.master.executor.meta.serverops.threads"; |
| public static final int MASTER_META_SERVER_OPERATIONS_THREADS_DEFAULT = 5; |
| |
| public static final String MASTER_LOG_REPLAY_OPS_THREADS = |
| "hbase.master.executor.logreplayops.threads"; |
| public static final int MASTER_LOG_REPLAY_OPS_THREADS_DEFAULT = 10; |
| |
| public static final int DEFAULT_SLOW_LOG_RING_BUFFER_SIZE = 256; |
| |
| public static final String SLOW_LOG_BUFFER_ENABLED_KEY = |
| "hbase.regionserver.slowlog.buffer.enabled"; |
| public static final boolean DEFAULT_ONLINE_LOG_PROVIDER_ENABLED = false; |
| |
| /** The slowlog info family as a string*/ |
| private static final String SLOWLOG_INFO_FAMILY_STR = "info"; |
| |
| /** The slowlog info family */ |
| public static final byte [] SLOWLOG_INFO_FAMILY = Bytes.toBytes(SLOWLOG_INFO_FAMILY_STR); |
| |
| public static final String SLOW_LOG_SYS_TABLE_ENABLED_KEY = |
| "hbase.regionserver.slowlog.systable.enabled"; |
| public static final boolean DEFAULT_SLOW_LOG_SYS_TABLE_ENABLED_KEY = false; |
| |
| /** |
| * Number of rows in a batch operation above which a warning will be logged. |
| */ |
| public static final String BATCH_ROWS_THRESHOLD_NAME = "hbase.rpc.rows.warning.threshold"; |
| |
| /** |
| * Default value of {@link #BATCH_ROWS_THRESHOLD_NAME} |
| */ |
| public static final int BATCH_ROWS_THRESHOLD_DEFAULT = 5000; |
| |
| private HConstants() { |
| // Can't be instantiated with this ctor. |
| } |
| } |