PurgeTxnLog (ZooKeeper 3.4.6 API)
Date: 2014-02-20

org.apache.zookeeper.server

## Class PurgeTxnLog

- java.lang.Object
- - org.apache.zookeeper.server.PurgeTxnLog

-     public class PurgeTxnLog
      extends Object

  this class is used to clean up the snapshot and data log dir's. This is usually run as a cronjob on the zookeeper server machine. Invocation of this class will clean up the datalogdir files and snapdir files keeping the last "-n" snapshot files and the corresponding logs.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `PurgeTxnLog()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static void` | `main(String[] args)`
    `static void` | `purge(File dataDir, File snapDir, int num)` purges the snapshot and logs keeping the last num snapshots and the corresponding logs.

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### PurgeTxnLog

          public PurgeTxnLog()

  - ### Method Detail

    - #### purge

          public static void purge(File dataDir,
                   File snapDir,
                   int num)
                            throws IOException

      purges the snapshot and logs keeping the last num snapshots and the corresponding logs.
      Parameters:
        `dataDir` - the dir that has the logs
        `snapDir` - the dir that has the snapshots
        `num` - the number of snapshots to keep
      Throws:
        `IOException`

    - #### main

          public static void main(String[] args)
                           throws IOException

      Parameters:
        `args` - PurgeTxnLog dataLogDir dataLogDir -- txn log directory -n num (number of snapshots to keep)
      Throws:
        `IOException`

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