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Jacek Furmankiewicz commented on CASSANDRA-4687: ------------------------------------------------ Yes, we have tried that and so far it seems OK. However, we are not sure what the perf implications are. Our app has very strict response time SLAs. Even a few ms extra could put us in violation. So this is a serious concern. Very troubling to see a bug that can bring down an entire cluster of all nodes is classified as Minor and has no one assigned to it. > 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 > Environment: CentOS 6.3 64-bit, Oracle JRE 1.6.0.33 64-bit, single > node cluster > Reporter: Leonid Shalupov > Priority: Minor > 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 was sent by Atlassian JIRA (v6.1#6144)