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  1. Cassandra
  2. CASSANDRA-9460

NullPointerException Creating Digest

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    Details

    • Severity:
      Normal

      Description

      In the consistency_test.TestConsistency.short_read_test dtest against cassandra-2.1, the following error occured:

      ERROR [ReadRepairStage:3] 2015-05-22 16:35:25,034 CassandraDaemon.java:223 - Exception in thread Thread[ReadRepairStage:3,5,main]
      java.lang.NullPointerException: null
          at org.apache.cassandra.db.ColumnFamily.updateDigest(ColumnFamily.java:390) ~[main/:na]
          at org.apache.cassandra.db.ColumnFamily.digest(ColumnFamily.java:383) ~[main/:na]
          at org.apache.cassandra.service.RowDigestResolver.resolve(RowDigestResolver.java:84) ~[main/:na]
          at org.apache.cassandra.service.RowDigestResolver.resolve(RowDigestResolver.java:28) ~[main/:na]
          at org.apache.cassandra.service.ReadCallback$AsyncRepairRunner.run(ReadCallback.java:176) ~[main/:na]
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) ~[na:1.7.0_80]
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) ~[na:1.7.0_80]
          at java.lang.Thread.run(Thread.java:745) ~[na:1.7.0_80]
      

      From a glance at the code in the stacktrace, it looks like there was a null cell in the ColumnFamily that we were creating a digest of. This error is probably particular to "short reads".

      Here's the failing test: http://cassci.datastax.com/job/cassandra-2.1_dtest/lastCompletedBuild/testReport/consistency_test/TestConsistency/short_read_test/. I've attached the logs for the node with the error.

      We saw this issue against 2.1, but the problem may also exist with 2.0 and/or 2.2.

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        1. node2.log
          75 kB
          Tom Hobbs

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              • Assignee:
                tjake T Jake Luciani
                Reporter:
                thobbs Tom Hobbs
                Authors:
                T Jake Luciani
                Reviewers:
                Stefania Alborghetti
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                Dates

                • Created:
                  Updated:
                  Resolved: