SSTable "Corrupt (negative) value length encountered" exception blocks
compaction.
----------------------------------------------------------------------------------
Key: CASSANDRA-2793
URL: https://issues.apache.org/jira/browse/CASSANDRA-2793
Project: Cassandra
Issue Type: Bug
Components: Core
Affects Versions: 0.7.6
Environment: Ubuntu
Reporter: Dominic Williams
Fix For: 0.7.7
A node was consistently experiencing high CPU load. Examination of the logs
showed that compaction of an sstable was failing with an error:
INFO [CompactionExecutor:1] 2011-06-17 00:18:51,676 CompactionManager.java
(line 395) Compacting
[SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-6993-Data.db'),SSTableReader(
path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-6994-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-6995-Data.db'),SSTableReader(path='/var/opt/cassandra
/data/FightMyMonster/UserMonsters-f-6996-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-6998-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/Use
rMonsters-f-7000-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7002-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7004-Data.db
'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7006-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7008-Data.db'),SSTableReader(path='/
var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7010-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7012-Data.db'),SSTableReader(path='/var/opt/cassandra/data/F
ightMyMonster/UserMonsters-f-7014-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7016-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonste
rs-f-7018-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7020-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7022-Data.db'),SSTa
bleReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7024-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7026-Data.db'),SSTableReader(path='/var/opt
/cassandra/data/FightMyMonster/UserMonsters-f-7028-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7030-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyM
onster/UserMonsters-f-7032-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7034-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-70
36-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7038-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7040-Data.db'),SSTableRead
er(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7042-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7044-Data.db'),SSTableReader(path='/var/opt/cassan
dra/data/FightMyMonster/UserMonsters-f-7046-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7048-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7050-Data.db'),SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7052-Data.db')]
ERROR [CompactionExecutor:1] 2011-06-17 00:19:21,446
AbstractCassandraDaemon.java (line 114) Fatal exception in thread
Thread[CompactionExecutor:1,1,main]
java.io.IOError: java.io.IOException: Corrupt (negative) value length
encountered at
org.apache.cassandra.io.util.ColumnIterator.deserializeNext(ColumnSortedMap.java:252)
at
org.apache.cassandra.io.util.ColumnIterator.next(ColumnSortedMap.java:268)
at
org.apache.cassandra.io.util.ColumnIterator.next(ColumnSortedMap.java:227)
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:379)
at
org.apache.cassandra.db.SuperColumnSerializer.deserialize(SuperColumn.java:362)
at
org.apache.cassandra.db.SuperColumnSerializer.deserialize(SuperColumn.java:322)
at
org.apache.cassandra.db.ColumnFamilySerializer.deserializeColumns(ColumnFamilySerializer.java:129)
at
org.apache.cassandra.io.sstable.SSTableIdentityIterator.getColumnFamilyWithColumns(SSTableIdentityIterator.java:201)
at
org.apache.cassandra.io.PrecompactedRow.<init>(PrecompactedRow.java:78)
at
org.apache.cassandra.io.CompactionIterator.getCompactedRow(CompactionIterator.java:154)
at
org.apache.cassandra.io.CompactionIterator.getReduced(CompactionIterator.java:110)
at
org.apache.cassandra.io.CompactionIterator.getReduced(CompactionIterator.java:45)
at
org.apache.cassandra.utils.ReducingIterator.computeNext(ReducingIterator.java:74)
at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:136)
at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:131)
at
org.apache.commons.collections.iterators.FilterIterator.setNextObject(FilterIterator.java:183)
at
org.apache.commons.collections.iterators.FilterIterator.hasNext(FilterIterator.java:94)
at
org.apache.cassandra.db.CompactionManager.doCompaction(CompactionManager.java:448)
at
org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:124)
at
org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:94)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.io.IOException: Corrupt (negative) value length encountered
at
org.apache.cassandra.utils.ByteBufferUtil.readWithLength(ByteBufferUtil.java:315)
at
org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:99)
at
org.apache.cassandra.io.util.ColumnIterator.deserializeNext(ColumnSortedMap.java:248)
... 26 more
Scrub was run on the keyspace (as a last ditch measure) but this did not work:
INFO [CompactionExecutor:1] 2011-06-17 00:43:42,023 CompactionManager.java
(line 511) Scrubbing
SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7494-Data.db')
INFO [CompactionExecutor:1] 2011-06-17 00:43:43,317 CompactionManager.java
(line 652) Scrub of
SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-7494-Data.db')
complete: 379 row
s in new sstable and 0 empty (tombstoned) rows dropped
INFO [CompactionExecutor:1] 2011-06-17 00:43:43,317 CompactionManager.java
(line 511) Scrubbing
SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-6994-Data.db')
WARN [CompactionExecutor:1] 2011-06-17 00:43:44,516 CompactionManager.java
(line 606) Non-fatal error reading row (stacktrace follows)
java.io.IOError: java.io.IOException: Corrupt (negative) value length
encountered
at
org.apache.cassandra.io.util.ColumnIterator.deserializeNext(ColumnSortedMap.java:252)
at
org.apache.cassandra.io.util.ColumnIterator.next(ColumnSortedMap.java:268)
at
org.apache.cassandra.io.util.ColumnIterator.next(ColumnSortedMap.java:227)
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:379)
at
org.apache.cassandra.db.SuperColumnSerializer.deserialize(SuperColumn.java:362)
at
org.apache.cassandra.db.SuperColumnSerializer.deserialize(SuperColumn.java:322)
at
org.apache.cassandra.db.ColumnFamilySerializer.deserializeColumns(ColumnFamilySerializer.java:129)
at
org.apache.cassandra.io.sstable.SSTableIdentityIterator.getColumnFamilyWithColumns(SSTableIdentityIterator.java:201)
at
org.apache.cassandra.io.PrecompactedRow.<init>(PrecompactedRow.java:78)
at
org.apache.cassandra.db.CompactionManager.getCompactedRow(CompactionManager.java:783)
at
org.apache.cassandra.db.CompactionManager.doScrub(CompactionManager.java:590)
at
org.apache.cassandra.db.CompactionManager.access$600(CompactionManager.java:56)
at
org.apache.cassandra.db.CompactionManager$3.call(CompactionManager.java:195)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.io.IOException: Corrupt (negative) value length encountered
at
org.apache.cassandra.utils.ByteBufferUtil.readWithLength(ByteBufferUtil.java:315)
at
org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:99)
at
org.apache.cassandra.io.util.ColumnIterator.deserializeNext(ColumnSortedMap.java:248)
... 19 more
WARN [CompactionExecutor:1] 2011-06-17 00:43:44,517 CompactionManager.java
(line 640) Row at 9517800 is unreadable; skipping to next
INFO [CompactionExecutor:1] 2011-06-17 00:43:45,073 CompactionManager.java
(line 652) Scrub of
SSTableReader(path='/var/opt/cassandra/data/FightMyMonster/UserMonsters-f-6994-Data.db')
complete: 1029 rows in new sstable and 0 empty (tombstoned) rows dropped
WARN [CompactionExecutor:1] 2011-06-17 00:43:45,073 CompactionManager.java
(line 654) Unable to recover 1 rows that were skipped. You can attempt manual
recovery from the pre-scrub snapshot. You can also run nodetool repair to
transfer the data from a healthy replica, if any
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
