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  1. Cassandra
  2. CASSANDRA-4305

CF serialization failure when working with custom secondary indices.

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Details

    • Bug
    • Status: Resolved
    • Normal
    • Resolution: Not A Problem
    • None
    • None
    • Normal

    Description

      Assertion (below) was triggered when client was adding new rows to Solr-backed secondary indices (1000-row batch without any timeout).

      ERROR [COMMIT-LOG-WRITER] 2012-05-30 16:39:02,896 AbstractCassandraDaemon.java (line 139) Fatal exception in thread Thread[COMMIT-LOG-WRITER,5,main]
      java.lang.AssertionError: Final buffer length 176 to accomodate data size of 123 (predicted 87) for RowMutation(keyspace='solrTest1338395932411', key='6b6579383039', modifications=[ColumnFamily(cf1 [long:false:8@1338395942384024,stringId:false:13@1338395940586003,])])
              at org.apache.cassandra.utils.FBUtilities.serialize(FBUtilities.java:682)
              at org.apache.cassandra.db.RowMutation.getSerializedBuffer(RowMutation.java:279)
              at org.apache.cassandra.db.commitlog.CommitLogSegment.write(CommitLogSegment.java:122)
              at org.apache.cassandra.db.commitlog.CommitLog$LogRecordAdder.run(CommitLog.java:600)
              at org.apache.cassandra.db.commitlog.PeriodicCommitLogExecutorService$1.runMayThrow(PeriodicCommitLogExecutorService.java:49)
              at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
              at java.lang.Thread.run(Thread.java:662)
      

      After investigation it was clear that it was happening because we were holding instances of RowMutation queued to the addition to CommitLog to the actual "write" moment which is redundant.

      Attachments

        1. CASSANDRA-4305.patch
          5 kB
          Pavel Yaskevich

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            Unassigned Unassigned
            xedin Pavel Yaskevich
            Jonathan Ellis
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            Dates

              Created:
              Updated:
              Resolved: