| /* |
| * 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.cassandra.tools; |
| |
| import java.io.PrintStream; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.cassandra.db.lifecycle.LifecycleTransaction; |
| import org.apache.cassandra.schema.Schema; |
| import org.apache.cassandra.db.ColumnFamilyStore; |
| import org.apache.cassandra.db.Directories; |
| import org.apache.cassandra.db.Keyspace; |
| import org.apache.cassandra.io.sstable.Component; |
| import org.apache.cassandra.io.sstable.Descriptor; |
| import org.apache.cassandra.io.sstable.metadata.MetadataType; |
| import org.apache.cassandra.io.sstable.metadata.StatsMetadata; |
| import org.apache.cassandra.utils.JVMStabilityInspector; |
| |
| /** |
| * Reset level to 0 on a given set of sstables |
| */ |
| public class SSTableLevelResetter |
| { |
| /** |
| * @param args a list of sstables whose metadata we are changing |
| */ |
| public static void main(String[] args) |
| { |
| PrintStream out = System.out; |
| if (args.length == 0) |
| { |
| out.println("This command should be run with Cassandra stopped!"); |
| out.println("Usage: sstablelevelreset <keyspace> <table>"); |
| System.exit(1); |
| } |
| |
| if (!args[0].equals("--really-reset") || args.length != 3) |
| { |
| out.println("This command should be run with Cassandra stopped, otherwise you will get very strange behavior"); |
| out.println("Verify that Cassandra is not running and then execute the command like this:"); |
| out.println("Usage: sstablelevelreset --really-reset <keyspace> <table>"); |
| System.exit(1); |
| } |
| |
| Util.initDatabaseDescriptor(); |
| |
| // TODO several daemon threads will run from here. |
| // So we have to explicitly call System.exit. |
| try |
| { |
| // load keyspace descriptions. |
| Schema.instance.loadFromDisk(); |
| |
| String keyspaceName = args[1]; |
| String columnfamily = args[2]; |
| // validate columnfamily |
| if (Schema.instance.getTableMetadataRef(keyspaceName, columnfamily) == null) |
| { |
| System.err.println("ColumnFamily not found: " + keyspaceName + "/" + columnfamily); |
| System.exit(1); |
| } |
| |
| // remove any leftovers in the transaction log |
| Keyspace keyspace = Keyspace.openWithoutSSTables(keyspaceName); |
| ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(columnfamily); |
| if (!LifecycleTransaction.removeUnfinishedLeftovers(cfs)) |
| { |
| throw new RuntimeException(String.format("Cannot remove temporary or obsoleted files for %s.%s " + |
| "due to a problem with transaction log files.", |
| keyspace, columnfamily)); |
| } |
| |
| Directories.SSTableLister lister = cfs.getDirectories().sstableLister(Directories.OnTxnErr.THROW).skipTemporary(true); |
| boolean foundSSTable = false; |
| for (Map.Entry<Descriptor, Set<Component>> sstable : lister.list().entrySet()) |
| { |
| if (sstable.getValue().contains(Component.STATS)) |
| { |
| foundSSTable = true; |
| Descriptor descriptor = sstable.getKey(); |
| StatsMetadata metadata = (StatsMetadata) descriptor.getMetadataSerializer().deserialize(descriptor, MetadataType.STATS); |
| if (metadata.sstableLevel > 0) |
| { |
| out.println("Changing level from " + metadata.sstableLevel + " to 0 on " + descriptor.filenameFor(Component.DATA)); |
| descriptor.getMetadataSerializer().mutateLevel(descriptor, 0); |
| } |
| else |
| { |
| out.println("Skipped " + descriptor.filenameFor(Component.DATA) + " since it is already on level 0"); |
| } |
| } |
| } |
| |
| if (!foundSSTable) |
| { |
| out.println("Found no sstables, did you give the correct keyspace/table?"); |
| } |
| } |
| catch (Throwable t) |
| { |
| JVMStabilityInspector.inspectThrowable(t); |
| t.printStackTrace(); |
| System.exit(1); |
| } |
| System.exit(0); |
| } |
| } |