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Date: Sat, 30 Jul 2011 04:16:11 +0000 (UTC)
From: "Jonathan Ellis (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (CASSANDRA-2973) fatal errrors after nodetool
 cleanup
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    [ https://issues.apache.org/jira/browse/CASSANDRA-2973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13073126#comment-13073126 ] 

Jonathan Ellis commented on CASSANDRA-2973:
-------------------------------------------

Is it reproducible?

If not, it's quite possible that it's transient hardware-caused corruption.

> fatal errrors after nodetool cleanup
> ------------------------------------
>
>                 Key: CASSANDRA-2973
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2973
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 0.8.1
>            Reporter: Wojciech Meler
>
> after adding nodes to cluster & running cleanup I get scaring exceptions in log:
> 2011-07-30 00:00:05:506 CEST ERROR [ReadStage:2335][org.apache.cassandra.service.AbstractCassandraDaemon] Fatal exception in thread Thread[ReadStage:2335,5,main]
> java.io.IOError: java.io.IOException: mmap segment underflow; remaining is 4394 but 60165 requested
>         at org.apache.cassandra.db.columniterator.IndexedSliceReader.<init>(IndexedSliceReader.java:80)
>         at org.apache.cassandra.db.columniterator.SSTableSliceIterator.createReader(SSTableSliceIterator.java:91)
>         at org.apache.cassandra.db.columniterator.SSTableSliceIterator.<init>(SSTableSliceIterator.java:67)
>         at org.apache.cassandra.db.filter.SliceQueryFilter.getSSTableColumnIterator(SliceQueryFilter.java:66)
>         at org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:80)
>         at org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1292)
>         at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1189)
>         at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1146)
>         at org.apache.cassandra.db.Table.getRow(Table.java:385)
>         at org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
>         at org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:69)
>         at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:72)
>         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.IOException: mmap segment underflow; remaining is 4394 but 60165 requested
>         at org.apache.cassandra.io.util.MappedFileDataInput.readBytes(MappedFileDataInput.java:117)
>         at org.apache.cassandra.utils.ByteBufferUtil.read(ByteBufferUtil.java:389)
>         at org.apache.cassandra.utils.ByteBufferUtil.readWithShortLength(ByteBufferUtil.java:368)
>         at org.apache.cassandra.io.sstable.IndexHelper$IndexInfo.deserialize(IndexHelper.java:194)
>         at org.apache.cassandra.io.sstable.IndexHelper.deserializeIndex(IndexHelper.java:83)
>         at org.apache.cassandra.db.columniterator.IndexedSliceReader.<init>(IndexedSliceReader.java:73)
>         ... 14 more
> exceptions disappeared after running scrub

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