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T Jake Luciani commented on CASSANDRA-4687: ------------------------------------------- I am seeing something similar here. {code} ERROR [ReadStage:70] 2012-10-05 13:26:40,215 AbstractCassandraDaemon.java (line 135) Exception in thread Thread[ReadStage:70,5,main] java.io.IOError: java.io.EOFException: unable to seek to position 165713136 in /opt/data/cassandra/data/prod/market_data_state/prod-market_data_state-he-5-Data.db (74622511 bytes) in read-only mode at org.apache.cassandra.io.util.CompressedSegmentedFile.getSegment(CompressedSegmentedFile.java:69) at org.apache.cassandra.io.sstable.SSTableReader.getFileDataInput(SSTableReader.java:898) at org.apache.cassandra.db.columniterator.SSTableSliceIterator.<init>(SSTableSliceIterator.java:50) at org.apache.cassandra.db.filter.SliceQueryFilter.getSSTableColumnIterator(SliceQueryFilter.java:67) at org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:79) at org.apache.cassandra.db.CollationController.collectAllData(CollationController.java:256) at org.apache.cassandra.db.CollationController.getTopLevelColumns(CollationController.java:64) at org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1345) at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1207) at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1142) at org.apache.cassandra.db.Table.getRow(Table.java:378) at org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:69) at org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:51) at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:59) 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:662) Caused by: java.io.EOFException: unable to seek to position 165713136 in /opt/data/cassandra/data/prod/market_data_state/prod-market_data_state-he-5-Data.db (74622511 bytes) in read-only mode at org.apache.cassandra.io.util.RandomAccessReader.seek(RandomAccessReader.java:253) at org.apache.cassandra.io.util.CompressedSegmentedFile.getSegment(CompressedSegmentedFile.java:64) ... 16 more {code} It seems to be hopping SSTables in compaction for the same row I'm trying to access so could be serialization issue. > Exception: DecoratedKey(xxx, yyy) != DecoratedKey(zzz, kkk) > ----------------------------------------------------------- > > Key: CASSANDRA-4687 > URL: https://issues.apache.org/jira/browse/CASSANDRA-4687 > Project: Cassandra > Issue Type: Bug > Components: Core > Affects Versions: 1.1.5 > Environment: CentOS 6.3 64-bit, Oracle JRE 1.6.0.33 64-bit, single > node cluster > Reporter: Leonid Shalupov > Assignee: Pavel Yaskevich > Priority: Critical > Fix For: 1.1.6 > > Attachments: 4687-debugging.txt > > > Under heavy write load sometimes cassandra fails with assertion error. > git bisect leads to commit 295aedb278e7a495213241b66bc46d763fd4ce66. > works fine if global key/row caches disabled in code. > {quote} > java.lang.AssertionError: DecoratedKey(xxx, yyy) != DecoratedKey(zzz, kkk) in > /var/lib/cassandra/data/...-he-1-Data.db > at > org.apache.cassandra.db.columniterator.SSTableSliceIterator.<init>(SSTableSliceIterator.java:60) > at > org.apache.cassandra.db.filter.SliceQueryFilter.getSSTableColumnIterator(SliceQueryFilter.java:67) > at > org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:79) > at > org.apache.cassandra.db.CollationController.collectAllData(CollationController.java:256) > at > org.apache.cassandra.db.CollationController.getTopLevelColumns(CollationController.java:64) > at > org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1345) > at > org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1207) > at > org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1142) > at org.apache.cassandra.db.Table.getRow(Table.java:378) > at > org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:69) > at > org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:819) > at > org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1253) > 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:662) > {quote} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira