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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Reopened: (CASSANDRA-1631) dropping column families and keyspaces races with compaction and flushing
Date Thu, 04 Nov 2010 15:56:44 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-1631?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis reopened CASSANDRA-1631:
---------------------------------------


This is still a bug with schema updates to an existing CF, since reloadCf is doing a unload/init
cycle.  So flushing + compaction is an issue there as well.  Here is a stacktrace from during
an index creation where it stubbed its toe on an incomplete sstable from an in-progress compaction
(path names anonymized):

{code}
 INFO [CompactionExecutor:1] 2010-11-02 16:31:00,553 CompactionManager.java (line 224) Compacting
[org.apache.cassandra.io.sstable.SSTableReader(path='Standard1-e-6-Data.db'),org.apache.cassandra.io.sstable.SSTableReader(path='Standard1-e-7-Data.db'),org.apache.cassandra.io.sstable.SSTableReader(path='Standard1-e-8-Data.db'),org.apache.cassandra.io.sstable.SSTableReader(path='Standard1-e-9-Data.db')]
...
ERROR [MigrationStage:1] 2010-11-02 16:31:10,939 ColumnFamilyStore.java (line 244) Corrupt
sstable Standard1-tmp-e-10-<>=[Data.db, Index.db]; skipped
java.io.EOFException
        at org.apache.cassandra.utils.FBUtilities.skipShortByteArray(FBUtilities.java:308)
        at org.apache.cassandra.io.sstable.SSTable.estimateRowsFromIndex(SSTable.java:231)
        at org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:286)
        at org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:202)
        at org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:235)
        at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:443)
        at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:431)
        at org.apache.cassandra.db.Table.initCf(Table.java:335)
        at org.apache.cassandra.db.Table.reloadCf(Table.java:343)
        at org.apache.cassandra.db.migration.UpdateColumnFamily.applyModels(UpdateColumnFamily.java:89)
        at org.apache.cassandra.db.migration.Migration.apply(Migration.java:158)
        at org.apache.cassandra.thrift.CassandraServer$2.call(CassandraServer.java:672)
        at java.util.concurrent.FutureTask$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)
...
 INFO [CompactionExecutor:1] 2010-11-02 16:31:31,970 CompactionManager.java (line 303) Compacted
to Standard1-tmp-e-10-Data.db.  213,657,983 to 213,657,983 (~100% of original) bytes for 626,563
keys.  Time: 31,416ms.
{code}

> dropping column families and keyspaces races with compaction and flushing
> -------------------------------------------------------------------------
>
>                 Key: CASSANDRA-1631
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1631
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.7 beta 2
>            Reporter: Gary Dusbabek
>            Assignee: Gary Dusbabek
>             Fix For: 0.7 beta 3
>
>         Attachments: v1-0001-fix-drop-race-with-compaction.txt, v1-0002-fix-drop-race-with-flush.txt
>
>


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