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Posted to commits@cassandra.apache.org by "Jonathan Ellis (Commented) (JIRA)" <ji...@apache.org> on 2012/02/25 00:39:49 UTC
[jira] [Commented] (CASSANDRA-2930) corrupt commitlog
[ https://issues.apache.org/jira/browse/CASSANDRA-2930?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13216112#comment-13216112 ]
Jonathan Ellis commented on CASSANDRA-2930:
-------------------------------------------
If this has the same cause as CASSANDRA-3957, then switching to batch commitlog sync mode should workaround it.
> corrupt commitlog
> -----------------
>
> Key: CASSANDRA-2930
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2930
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.8.1
> Environment: Linux, amd64.
> Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
> Reporter: ivan
> Assignee: Rick Branson
> Labels: datastax_qa
> Attachments: CommitLog-1310637513214.log
>
>
> We get "Exception encountered during startup" error while Cassandra starts.
> Error messages:
> INFO 13:56:28,736 Finished reading /var/lib/cassandra/commitlog/CommitLog-1310637513214.log
> ERROR 13:56:28,736 Exception encountered during startup.
> java.io.IOError: java.io.EOFException
> at org.apache.cassandra.io.util.ColumnIterator.deserializeNext(ColumnSortedMap.java:265)
> at org.apache.cassandra.io.util.ColumnIterator.next(ColumnSortedMap.java:281)
> at org.apache.cassandra.io.util.ColumnIterator.next(ColumnSortedMap.java:236)
> at java.util.concurrent.ConcurrentSkipListMap.buildFromSorted(ConcurrentSkipListMap.java:1493)
> at java.util.concurrent.ConcurrentSkipListMap.<init>(ConcurrentSkipListMap.java:1443)
> at org.apache.cassandra.db.SuperColumnSerializer.deserialize(SuperColumn.java:419)
> at org.apache.cassandra.db.ColumnFamilySerializer.deserializeColumns(ColumnFamilySerializer.java:139)
> at org.apache.cassandra.db.ColumnFamilySerializer.deserialize(ColumnFamilySerializer.java:127)
> at org.apache.cassandra.db.RowMutation$RowMutationSerializer.deserialize(RowMutation.java:382)
> at org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:278)
> at org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:158)
> at org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:175)
> at org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:368)
> at org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:80)
> Caused by: java.io.EOFException
> at java.io.DataInputStream.readFully(DataInputStream.java:180)
> at java.io.DataInputStream.readFully(DataInputStream.java:152)
> at org.apache.cassandra.utils.ByteBufferUtil.read(ByteBufferUtil.java:394)
> at org.apache.cassandra.utils.ByteBufferUtil.readWithShortLength(ByteBufferUtil.java:368)
> at org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:87)
> at org.apache.cassandra.io.util.ColumnIterator.deserializeNext(ColumnSortedMap.java:261)
> ... 13 more
> Exception encountered during startup.
> java.io.IOError: java.io.EOFException
> at org.apache.cassandra.io.util.ColumnIterator.deserializeNext(ColumnSortedMap.java:265)
> at org.apache.cassandra.io.util.ColumnIterator.next(ColumnSortedMap.java:281)
> at org.apache.cassandra.io.util.ColumnIterator.next(ColumnSortedMap.java:236)
> at java.util.concurrent.ConcurrentSkipListMap.buildFromSorted(ConcurrentSkipListMap.java:1493)
> at java.util.concurrent.ConcurrentSkipListMap.<init>(ConcurrentSkipListMap.java:1443)
> at org.apache.cassandra.db.SuperColumnSerializer.deserialize(SuperColumn.java:419)
> at org.apache.cassandra.db.ColumnFamilySerializer.deserializeColumns(ColumnFamilySerializer.java:139)
> at org.apache.cassandra.db.ColumnFamilySerializer.deserialize(ColumnFamilySerializer.java:127)
> at org.apache.cassandra.db.RowMutation$RowMutationSerializer.deserialize(RowMutation.java:382)
> at org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:278)
> at org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:158)
> at org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:175)
> at org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:368)
> at org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:80)
> Caused by: java.io.EOFException
> at java.io.DataInputStream.readFully(DataInputStream.java:180)
> at java.io.DataInputStream.readFully(DataInputStream.java:152)
> at org.apache.cassandra.utils.ByteBufferUtil.read(ByteBufferUtil.java:394)
> at org.apache.cassandra.utils.ByteBufferUtil.readWithShortLength(ByteBufferUtil.java:368)
> at org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:87)
> at org.apache.cassandra.io.util.ColumnIterator.deserializeNext(ColumnSortedMap.java:261)
> ... 13 more
> After some debugging I found that in some serialized supercolumns column counter is less than the number of serialized columns. Difference was always 1 in corrupt commitlogs. This error always appears with supercolumns with more than one column, but there are properly serialized supercolumns also in commitlog.
> I have no clue yet why this error happens. I suspect it maybe a race condition.
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