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From "Joel Knighton (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-9851) Write Durability Failures Even During Batch Commit Mode
Date Mon, 20 Jul 2015 20:21:04 GMT
Joel Knighton created CASSANDRA-9851:

             Summary: Write Durability Failures Even During Batch Commit Mode 
                 Key: CASSANDRA-9851
             Project: Cassandra
          Issue Type: Bug
          Components: Core
         Environment: Debian, x86_64, Kernel 3.16.7
            Reporter: Joel Knighton

Reproducible as of a66863861136a29dc04d7bc3b319f9f8fae0f49f on trunk, as well as in other
recent commits.

Durability of writes seems to be violated, even under batch commitlog mode. This issue was
discovered by a test that adds a range of values to a CQL Set, with no deletes issued. The
test is available here
A read is then issued with consistency level ALL.

During this write pattern, random nodes in the cluster are kill -9ed. Once all nodes have
been brought back up, another read is issued. This read fails to return values that have previously
been successfully read from the cluster. This problem is not reproducible on 2.1.* or 2.2.

Log files from each node are attached.

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