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From "Alexander Sterligov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-8159) NPE in SSTableReader
Date Tue, 21 Oct 2014 17:19:34 GMT
Alexander Sterligov created CASSANDRA-8159:
----------------------------------------------

             Summary: NPE in SSTableReader
                 Key: CASSANDRA-8159
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8159
             Project: Cassandra
          Issue Type: Bug
          Components: Core
            Reporter: Alexander Sterligov
            Priority: Minor


Log file contains a lot of following exceptions:

{quote}
WARN  [CompactionExecutor:15674] 2014-10-21 20:57:56,838 OutputHandler.java:52 - Out of order
row detected (DecoratedKey(8937955371032053430, 39352e3130382e3234322e32302d6765744d656d427566666572734d62)
found
 after DecoratedKey(9186481584950194146, 800100010000000c62617463685f6d7574617465000056640d00010b0d0000000100))
{quote}

I tried to scrub sstables by nodetool and got:

{quote}
ERROR [CompactionExecutor:15674] 2014-10-21 20:57:57,229 CassandraDaemon.java:166 - Exception
in thread Thread[CompactionExecutor:15674,1,RMI Runtime]
java.lang.NullPointerException: null
        at org.apache.cassandra.io.sstable.SSTableReader.cloneWithNewStart(SSTableReader.java:942)
~[apache-cassandra-2.1.0.jar:2.1.0]
        at org.apache.cassandra.io.sstable.SSTableRewriter.moveStarts(SSTableRewriter.java:238)
~[apache-cassandra-2.1.0.jar:2.1.0]
        at org.apache.cassandra.io.sstable.SSTableRewriter.finish(SSTableRewriter.java:318)
~[apache-cassandra-2.1.0.jar:2.1.0]
        at org.apache.cassandra.db.compaction.Scrubber.scrub(Scrubber.java:257) ~[apache-cassandra-2.1.0.jar:2.1.0]
        at org.apache.cassandra.db.compaction.CompactionManager.scrubOne(CompactionManager.java:592)
~[apache-cassandra-2.1.0.jar:2.1.0]
        at org.apache.cassandra.db.compaction.CompactionManager.access$300(CompactionManager.java:100)
~[apache-cassandra-2.1.0.jar:2.1.0]
        at org.apache.cassandra.db.compaction.CompactionManager$3.execute(CompactionManager.java:315)
~[apache-cassandra-2.1.0.jar:2.1.0]
        at org.apache.cassandra.db.compaction.CompactionManager$2.call(CompactionManager.java:270)
~[apache-cassandra-2.1.0.jar:2.1.0]
        at java.util.concurrent.FutureTask.run(FutureTask.java:262) ~[na:1.7.0_51]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
~[na:1.7.0_51]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
[na:1.7.0_51]
        at java.lang.Thread.run(Thread.java:744) [na:1.7.0_51]
{quote}

sstablescrub successfully fixed sstables.



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