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  1. Apache Cassandra
  2. CASSANDRA-8429

Some keys unreadable during compaction

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Details

    • Bug
    • Status: Resolved
    • Normal
    • Resolution: Fixed
    • 2.1.3
    • None
    • None
    • Ubuntu 14.04

    • Normal

    Description

      Starts as part of merge commit 25be46497a8df46f05ffa102bc645bfd684ea48a

      Stress will say that a key wasn't validated because it isn't returned even though it's loaded. The key will eventually appear and can be queried using cqlsh.

      Reproduce with
      #!/bin/sh
      ROWCOUNT=10000000
      SCHEMA='-col n=fixed(1) -schema compaction(strategy=LeveledCompactionStrategy) compression=LZ4Compressor'
      ./cassandra-stress write n=$ROWCOUNT -node xh61 -pop seq=1..$ROWCOUNT no-wrap -rate threads=25 $SCHEMA
      ./cassandra-stress mixed "ratio(read=2)" n=100000000 -node xh61 -pop "dist=extreme(1..$ROWCOUNT,0.6)" -rate threads=25 $SCHEMA

      Attachments

        1. cluster.conf
          0.4 kB
          Ariel Weisberg
        2. run_stress.sh
          0.4 kB
          Ariel Weisberg

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            benedict Benedict Elliott Smith Assign to me
            aweisberg Ariel Weisberg
            Benedict Elliott Smith
            Marcus Eriksson
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