[jira] [Created] (HBASE-9948) HMaster should handle duplicate log split requests

["Ted Yu (JIRA)" <ji...@apache.org>]

Ted Yu created HBASE-9948:
-----------------------------

             Summary: HMaster should handle duplicate log split requests
                 Key: HBASE-9948
                 URL: https://issues.apache.org/jira/browse/HBASE-9948
             Project: HBase
          Issue Type: Bug
            Reporter: Ted Yu


I saw the following in test output for TestRestartCluster:
{code}
2013-11-11 19:59:55,538 DEBUG [M:0;kiyo:36213] master.SplitLogManager(327): Scheduling batch of logs to split
2013-11-11 19:59:55,538 INFO  [M:0;kiyo:36213] master.SplitLogManager(329): started splitting 1 logs in [hdfs://localhost:46376/user/hortonzy/hbase/WALs/kk,44962,1384199990193-splitting]
2013-11-11 19:59:55,538 WARN  [M:0;kiyo:36213] master.SplitLogManager(1048): Failure because two threads can't wait for the same task; path=/hbase/splitWAL/WALs%2Fkk%2C44962%2C1384199990193-splitting%2Fkk%252C44962%252C1384199990193.1384199993702.meta
2013-11-11 19:59:55,538 FATAL [M:0;kiyo:36213] master.HMaster(2188): Master server abort: loaded coprocessors are: [org.apache.hadoop.hbase.coprocessor.MultiRowMutationEndpoint]
2013-11-11 19:59:55,538 FATAL [M:0;kiyo:36213] master.HMaster(2193): Unhandled exception. Starting shutdown.
java.io.IOException: duplicate log split scheduled for hdfs://localhost:46376/user/hortonzy/hbase/WALs/kk,44962,1384199990193-splitting/kk%2C44962%2C1384199990193.1384199993702.meta
        at org.apache.hadoop.hbase.master.SplitLogManager.splitLogDistributed(SplitLogManager.java:343)
        at org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:409)
        at org.apache.hadoop.hbase.master.MasterFileSystem.splitMetaLog(MasterFileSystem.java:301)
        at org.apache.hadoop.hbase.master.MasterFileSystem.splitMetaLog(MasterFileSystem.java:292)
        at org.apache.hadoop.hbase.master.HMaster.assignMeta(HMaster.java:1038)
        at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:868)
        at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:605)
        at java.lang.Thread.run(Thread.java:724)
2013-11-11 19:59:55,539 INFO  [M:0;kiyo:36213] master.HMaster(2386): Aborting
2013-11-11 19:59:55,539 DEBUG [M:0;kiyo:36213] master.HMaster(1234): Stopping service threads
{code}
HMaster should handle duplicate log split requests, instead of aborting.



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