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https://issues.apache.org/jira/browse/CASSANDRA-2598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270842#comment-13270842
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Jonathan Ellis commented on CASSANDRA-2598:
-------------------------------------------
Please create a new issue with steps to reproduce. Thanks!
> incremental_backups and snapshot_before_compaction duplicate hard links
> -----------------------------------------------------------------------
>
> Key: CASSANDRA-2598
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2598
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.8 beta 1
> Environment: linux & jna
> Reporter: Mck SembWever
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 0.8.0
>
> Attachments: 2598.txt
>
>
> See discussion @ http://thread.gmane.org/gmane.comp.db.cassandra.user/15933/
> Enabling both incremental_backups and snapshot_before_compaction leads to the
> same hard links trying to be created.
> This gives stacktraces like
> java.io.IOError: java.io.IOException: Unable to create hard link from
> /cassandra-data/<keyspace>/<cf>-f-3875-Data.db
> to
> /cassandra-data/<keyspace>/snapshots/compact-<cf>/<cf>-f-3875-Data.db
> (errno 17)
> at
> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1629)
> at
> org.apache.cassandra.db.ColumnFamilyStore.snapshot(ColumnFamilyStore.java:1654)
> at org.apache.cassandra.db.Table.snapshot(Table.java:198)
> at
> org.apache.cassandra.db.CompactionManager.doCompaction(CompactionManager.java:504)
> at
> org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:146)
> at
> org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:112)
> at java.util.concurrent.FutureTask$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:662)
> Caused by: java.io.IOException: Unable to create hard link from
> /cassandra-data/<keyspace>/<cf>-f-3875-Data.db
> to
> /cassandra-data/<keyspace>/snapshots/compact-<cf>/<cf>-f-3875-Data.db
> (errno 17)
> at org.apache.cassandra.utils.CLibrary.createHardLink(CLibrary.java:155)
> at
> org.apache.cassandra.io.sstable.SSTableReader.createLinks(SSTableReader.java:713)
> at
> org.apache.cassandra.db.ColumnFamilyStore.snapshotWithoutFlush(ColumnFamilyStore.java:1622)
> ... 10 more
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