[jira] [Created] (CASSANDRA-12397) Altering a column's type breaks commitlog replay

["Carl Yeksigian (JIRA)" <ji...@apache.org>]

Carl Yeksigian created CASSANDRA-12397:
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             Summary: Altering a column's type breaks commitlog replay
                 Key: CASSANDRA-12397
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12397
             Project: Cassandra
          Issue Type: Bug
            Reporter: Carl Yeksigian


When switching from a fixed-length column to a variable-length column, replaying the commitlog on restart will have the same issue as CASSANDRA-11820. Seems like it is related to the schema being flushed and used when restarted, but commitlogs having been written in the old format.

{noformat}
org.apache.cassandra.db.commitlog.CommitLogReadHandler$CommitLogReadException: Unexpected error deserializing mutation; saved to /tmp/mutation4816372620457789996dat.  This may be caused by replaying a mutation against a table with the same name but incompatible schema.  Exception follows: java.io.IOError: java.io.EOFException: EOF after 259 bytes out of 3336
        at org.apache.cassandra.db.commitlog.CommitLogReader.readMutation(CommitLogReader.java:409) [main/:na]
        at org.apache.cassandra.db.commitlog.CommitLogReader.readSection(CommitLogReader.java:342) [main/:na]
        at org.apache.cassandra.db.commitlog.CommitLogReader.readCommitLogSegment(CommitLogReader.java:201) [main/:na]
        at org.apache.cassandra.db.commitlog.CommitLogReader.readAllFiles(CommitLogReader.java:84) [main/:na]
        at org.apache.cassandra.db.commitlog.CommitLogReplayer.replayFiles(CommitLogReplayer.java:139) [main/:na]
        at org.apache.cassandra.db.commitlog.CommitLog.recoverFiles(CommitLog.java:177) [main/:na]
        at org.apache.cassandra.db.commitlog.CommitLog.recoverSegmentsOnDisk(CommitLog.java:158) [main/:na]
        at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:316) [main/:na]
        at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:591) [main/:na]
        at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:720) [main/:na]
{noformat}



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