[CASSANDRA-12397] Altering a column's type breaks commitlog replay

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Not A Problem
• Severity: Normal
• Assignee: Stefania Alborghetti
• Reporter: Carl Yeksigian

Authors

Stefania Alborghetti

• Created: 05/Aug/16 16:48
• Updated: 16/Apr/19 09:30
• Resolved: 20/Feb/17 17:03

Description

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.

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]

Issue Links

• is related to: CASSANDRA-11820 Altering a column's type causes EOF
• relates to: CASSANDRA-12461 Add hooks to StorageService shutdown