| /* |
| * 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.hive.kudu; |
| |
| import java.io.IOException; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| import com.google.common.base.Preconditions; |
| import com.google.common.base.Throwables; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hive.conf.HiveConf; |
| import org.apache.hadoop.hive.kudu.KuduOutputFormat.KuduRecordWriter; |
| import org.apache.hadoop.hive.metastore.HiveMetaHook; |
| import org.apache.hadoop.hive.metastore.api.MetaException; |
| import org.apache.hadoop.hive.metastore.api.Table; |
| import org.apache.hadoop.hive.ql.exec.Utilities; |
| import org.apache.hadoop.hive.ql.metadata.DefaultStorageHandler; |
| import org.apache.hadoop.hive.ql.metadata.HiveException; |
| import org.apache.hadoop.hive.ql.metadata.HiveStorageHandler; |
| import org.apache.hadoop.hive.ql.metadata.HiveStoragePredicateHandler; |
| import org.apache.hadoop.hive.ql.metadata.StorageHandlerInfo; |
| import org.apache.hadoop.hive.ql.plan.ExprNodeDesc; |
| import org.apache.hadoop.hive.ql.plan.TableDesc; |
| import org.apache.hadoop.hive.ql.security.authorization.DefaultHiveAuthorizationProvider; |
| import org.apache.hadoop.hive.ql.security.authorization.HiveAuthorizationProvider; |
| import org.apache.hadoop.hive.ql.security.authorization.HiveCustomStorageHandlerUtils; |
| import org.apache.hadoop.hive.serde2.AbstractSerDe; |
| import org.apache.hadoop.hive.serde2.Deserializer; |
| import org.apache.hadoop.mapred.InputFormat; |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.mapred.OutputFormat; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.kudu.Schema; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Provides a HiveStorageHandler implementation for Apache Kudu. |
| */ |
| public class KuduStorageHandler extends DefaultStorageHandler implements HiveStoragePredicateHandler, HiveStorageHandler { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(KuduStorageHandler.class); |
| |
| private static final String KUDU_PREFIX = "kudu:"; |
| |
| private static final String KUDU_PROPERTY_PREFIX = "kudu."; |
| |
| /** Table Properties. Used in the hive table definition when creating a new table. */ |
| public static final String KUDU_TABLE_ID_KEY = KUDU_PROPERTY_PREFIX + "table_id"; |
| public static final String KUDU_TABLE_NAME_KEY = KUDU_PROPERTY_PREFIX + "table_name"; |
| public static final String KUDU_MASTER_ADDRS_KEY = KUDU_PROPERTY_PREFIX + "master_addresses"; |
| public static final List<String> KUDU_TABLE_PROPERTIES = |
| Arrays.asList(KUDU_TABLE_ID_KEY, KUDU_TABLE_NAME_KEY, KUDU_MASTER_ADDRS_KEY); |
| |
| private Configuration conf; |
| |
| @Override |
| public Class<? extends InputFormat> getInputFormatClass() { |
| return KuduInputFormat.class; |
| } |
| |
| @Override |
| public Class<? extends OutputFormat> getOutputFormatClass() { |
| return KuduOutputFormat.class; |
| } |
| |
| @Override |
| public Class<? extends AbstractSerDe> getSerDeClass() { |
| return KuduSerDe.class; |
| } |
| |
| @Override |
| public HiveMetaHook getMetaHook() { |
| return null; |
| } |
| |
| @Override |
| public HiveAuthorizationProvider getAuthorizationProvider() throws HiveException { |
| return new DefaultHiveAuthorizationProvider(); |
| } |
| |
| @Override |
| public Configuration getConf() { |
| return conf; |
| } |
| |
| @Override |
| public void setConf(Configuration conf) { |
| this.conf = conf; |
| } |
| |
| @Override |
| public void configureInputJobProperties(TableDesc tableDesc, |
| Map<String, String> jobProperties) { |
| configureJobProperties(tableDesc, jobProperties); |
| } |
| |
| @Override |
| public void configureOutputJobProperties(TableDesc tableDesc, |
| Map<String, String> jobProperties) { |
| configureJobProperties(tableDesc, jobProperties); |
| } |
| |
| @Override |
| public void configureTableJobProperties(TableDesc tableDesc, |
| Map<String, String> jobProperties) { |
| configureJobProperties(tableDesc, jobProperties); |
| } |
| |
| @Override |
| public void configureJobConf(TableDesc tableDesc, JobConf jobConf) { |
| // Copied from the DruidStorageHandler. |
| if (UserGroupInformation.isSecurityEnabled()) { |
| // AM can not do Kerberos Auth so will do the input split generation in the HS2 |
| LOG.debug("Setting {} to {} to enable split generation on HS2", |
| HiveConf.ConfVars.HIVE_AM_SPLIT_GENERATION.toString(), |
| Boolean.FALSE.toString()); |
| jobConf.set(HiveConf.ConfVars.HIVE_AM_SPLIT_GENERATION.toString(), Boolean.FALSE.toString()); |
| } |
| try { |
| Utilities.addDependencyJars(jobConf, KuduStorageHandler.class); |
| } catch (IOException e) { |
| Throwables.propagate(e); |
| } |
| } |
| |
| private void configureJobProperties(TableDesc tableDesc, |
| Map<String, String> jobProperties) { |
| |
| Properties tblProps = tableDesc.getProperties(); |
| copyPropertiesFromTable(jobProperties, tblProps); |
| } |
| |
| private void copyPropertiesFromTable(Map<String, String> jobProperties, Properties tblProps) { |
| for (String propToCopy : KUDU_TABLE_PROPERTIES) { |
| if (tblProps.containsKey(propToCopy)) { |
| String value = tblProps.getProperty(propToCopy); |
| conf.set(propToCopy, value); |
| jobProperties.put(propToCopy, value); |
| } |
| } |
| } |
| |
| @Override |
| public URI getURIForAuth(Table table) throws URISyntaxException { |
| Map<String, String> tableProperties = HiveCustomStorageHandlerUtils.getTableProperties(table); |
| String host_name = tableProperties.get(KUDU_MASTER_ADDRS_KEY) != null ? |
| tableProperties.get(KUDU_MASTER_ADDRS_KEY) : conf.get(KUDU_MASTER_ADDRS_KEY); |
| Preconditions.checkNotNull(host_name, "Set Table property " + conf); |
| String table_name = tableProperties.get(KUDU_TABLE_NAME_KEY); |
| Preconditions.checkNotNull(table_name, "Set Table property " + KUDU_TABLE_NAME_KEY); |
| return new URI(KUDU_PREFIX+"//"+host_name+"/"+table_name); |
| } |
| |
| /** |
| * Gives the storage handler a chance to decompose a predicate. |
| * The storage handler should analyze the predicate and return the portion of it which |
| * cannot be evaluated during table access. |
| * |
| * @param jobConf contains a job configuration matching the one that will later be passed |
| * to getRecordReader and getSplits |
| * @param deserializer deserializer which will be used when fetching rows |
| * @param predicate predicate to be decomposed |
| * @return decomposed form of predicate, or null if no pushdown is possible at all |
| */ |
| @Override |
| public DecomposedPredicate decomposePredicate(JobConf jobConf, Deserializer deserializer, |
| ExprNodeDesc predicate) { |
| Preconditions.checkArgument(deserializer instanceof KuduSerDe); |
| KuduSerDe serDe = (KuduSerDe) deserializer; |
| Schema schema = serDe.getSchema(); |
| return KuduPredicateHandler.decompose(predicate, schema); |
| } |
| |
| /** |
| * Used to fetch runtime information about storage handler during DESCRIBE EXTENDED statement. |
| */ |
| @Override |
| public StorageHandlerInfo getStorageHandlerInfo(Table table) throws MetaException { |
| return null; |
| } |
| } |