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From "Nick Dimiduk (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-12123) Failed assertion in BucketCache after 11331
Date Tue, 30 Sep 2014 19:35:34 GMT
Nick Dimiduk created HBASE-12123:
------------------------------------

             Summary: Failed assertion in BucketCache after 11331
                 Key: HBASE-12123
                 URL: https://issues.apache.org/jira/browse/HBASE-12123
             Project: HBase
          Issue Type: Bug
          Components: regionserver
            Reporter: Nick Dimiduk
            Assignee: Nick Dimiduk
             Fix For: 2.0.0, 0.98.7, 0.99.1


As reported by [~enis]

We have seen this in one of the test runs: 

{code}
2014-09-26 05:31:19,788 WARN  [main-BucketCacheWriter-2] bucket.BucketCache: Failed doing
drain
java.lang.AssertionError
  at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache$RAMQueueEntry.writeToCache(BucketCache.java:1239)
  at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache$WriterThread.doDrain(BucketCache.java:773)
  at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache$WriterThread.run(BucketCache.java:731)
  at java.lang.Thread.run(Thread.java:745)
2014-09-26 05:31:19,925 INFO  [main-BucketCacheWriter-2] bucket.BucketCache: main-BucketCacheWriter-2
exiting, cacheEnabled=true
2014-09-26 05:31:19,838 WARN  [main-BucketCacheWriter-1] bucket.BucketCache: Failed doing
drain
java.lang.AssertionError
  at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache$RAMQueueEntry.writeToCache(BucketCache.java:1239)
  at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache$WriterThread.doDrain(BucketCache.java:773)
  at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache$WriterThread.run(BucketCache.java:731)
  at java.lang.Thread.run(Thread.java:745)
2014-09-26 05:31:19,791 WARN  [main-BucketCacheWriter-0] bucket.BucketCache: Failed doing
drain
java.lang.AssertionError
  at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache$RAMQueueEntry.writeToCache(BucketCache.java:1239)
  at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache$WriterThread.doDrain(BucketCache.java:773)
  at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache$WriterThread.run(BucketCache.java:731)
  at java.lang.Thread.run(Thread.java:745)
2014-09-26 05:31:19,926 INFO  [main-BucketCacheWriter-0] bucket.BucketCache: main-BucketCacheWriter-0
exiting, cacheEnabled=true
2014-09-26 05:31:19,926 INFO  [main-BucketCacheWriter-1] bucket.BucketCache: main-BucketCacheWriter-1
exiting, cacheEnabled=true
{code}

We are still running with assertions on in tests, and this block is failing the assertion.
Seems important: 

{code}
        if (data instanceof HFileBlock) {
          ByteBuffer sliceBuf = ((HFileBlock) data).getBufferReadOnlyWithHeader();
          sliceBuf.rewind();
          assert len == sliceBuf.limit() + HFileBlock.EXTRA_SERIALIZATION_SPACE;
{code}




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