[
https://issues.apache.org/jira/browse/CASSANDRA-12397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15528543#comment-15528543
]
Stefania commented on CASSANDRA-12397:
--------------------------------------
Reproduced in 3.0 HEAD by following the steps of CASSANDRA-11820:
{code}
cqlsh> CREATE KEYSPACE ks WITH replication = {'class': 'SimpleStrategy',
'replication_factor': 1};
cqlsh> CREATE TABLE ks.test (a int PRIMARY KEY, b int);
cqlsh> INSERT INTO ks.test (a, b) VALUES (1, 1);
cqlsh> ALTER TABLE ks.test ALTER b TYPE BLOB;
cqlsh> SELECT * from ks.test ;
{code}
At this point restarting the node will give the following exception:
{code}
INFO 06:00:03 Replaying
/home/stefi/git/cstar/cassandra/bin/../data/commitlog/CommitLog-6-1475042184522.log,
/home/stefi/git/cstar/cassandra/bin/../data/commitlog/CommitLog-6-1475042184523.log
ERROR 06:00:03 Exiting due to error while processing commit log during
initialization.
org.apache.cassandra.db.commitlog.CommitLogReplayer$CommitLogReplayException:
Unexpected error deserializing mutation; saved to
/tmp/mutation4358621772356735283dat. 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
at
org.apache.cassandra.db.commitlog.CommitLogReplayer.handleReplayError(CommitLogReplayer.java:681)
[main/:na]
at
org.apache.cassandra.db.commitlog.CommitLogReplayer.replayMutation(CommitLogReplayer.java:597)
[main/:na]
at
org.apache.cassandra.db.commitlog.CommitLogReplayer.replaySyncSection(CommitLogReplayer.java:550)
[main/:na]
at
org.apache.cassandra.db.commitlog.CommitLogReplayer.recover(CommitLogReplayer.java:445)
[main/:na]
at
org.apache.cassandra.db.commitlog.CommitLogReplayer.recover(CommitLogReplayer.java:145)
[main/:na]
at
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:181)
[main/:na]
at
org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:161)
[main/:na]
at
org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:293)
[main/:na]
at
org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:568)
[main/:na]
at
org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:696)
[main/:na]
{code}
Note that the mutation was actually serialized in an sstable that sstabledump
can read without problems:
{code}
sstabledump data/data/ks/test-5b23e8e0854011e69e1cf96348c3ad08/mc-1-big-Data.db
[
{
"partition" : {
"key" : [ "1" ],
"position" : 0
},
"rows" : [
{
"type" : "row",
"position" : 18,
"liveness_info" : { "tstamp" : "2016-09-28T05:57:05.612504Z" },
"cells" : [
{ "name" : "b", "value" : "1" }
]
}
]
}
]
{code}
> 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
> Assignee: Stefania
>
> 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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