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
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.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
