org.apache.cassandra.tools.nodetool.GetSSTables Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of cassandra-all Show documentation

The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.

There is a newer version: 5.0.0

Show newest version

/*
 * 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.nodetool;

import static com.google.common.base.Preconditions.checkArgument;
import io.airlift.airline.Arguments;
import io.airlift.airline.Command;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;

import io.airlift.airline.Option;
import org.apache.cassandra.tools.NodeProbe;
import org.apache.cassandra.tools.NodeTool.NodeToolCmd;

@Command(name = "getsstables", description = "Print the sstable filenames that own the key")
public class GetSSTables extends NodeToolCmd
{
    @Option(title = "hex_format",
           name = {"-hf", "--hex-format"},
           description = "Specify the key in hexadecimal string format")
    private boolean hexFormat = false;

    @Option(name={"-l", "--show-levels"}, description="If the table is using leveled compaction the level of each sstable will be included in the output (Default: false)")
    private boolean showLevels = false;

    @Arguments(usage = "  ", description = "The keyspace, the column family, and the key")
    private List args = new ArrayList<>();

    @Override
    public void execute(NodeProbe probe)
    {
        checkArgument(args.size() == 3, "getsstables requires ks, cf and key args");
        String ks = args.get(0);
        String cf = args.get(1);
        String key = args.get(2);

        if (showLevels && probe.isLeveledCompaction(ks, cf))
        {
            Map> sstables = probe.getSSTablesWithLevel(ks, cf, key, hexFormat);
            for (Integer level : sstables.keySet())
                for (String sstable : sstables.get(level))
                    probe.output().out.println(level + ": " + sstable);
        } else
        {
            List sstables = probe.getSSTables(ks, cf, key, hexFormat);
            for (String sstable : sstables)
            {
                probe.output().out.println(sstable);
            }
        }
    }
}