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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (CASSANDRA-5930) Offline scrubs can choke on broken files
Date Tue, 19 Nov 2013 22:23:23 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-5930?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis reassigned CASSANDRA-5930:
-----------------------------------------

    Assignee: Tyler Hobbs  (was: Jason Brown)

> Offline scrubs can choke on broken files
> ----------------------------------------
>
>                 Key: CASSANDRA-5930
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5930
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Jeremiah Jordan
>            Assignee: Tyler Hobbs
>            Priority: Minor
>
> There are cases where offline scrub can hit an exception and die, like:
> {noformat}
> WARNING: Non-fatal error reading row (stacktrace follows)
> Exception in thread "main" java.io.IOError: java.io.IOError: java.io.EOFException
> 	at org.apache.cassandra.db.compaction.Scrubber.scrub(Scrubber.java:242)
> 	at org.apache.cassandra.tools.StandaloneScrubber.main(StandaloneScrubber.java:121)
> Caused by: java.io.IOError: java.io.EOFException
> 	at org.apache.cassandra.db.compaction.PrecompactedRow.merge(PrecompactedRow.java:116)
> 	at org.apache.cassandra.db.compaction.PrecompactedRow.<init>(PrecompactedRow.java:99)
> 	at org.apache.cassandra.db.compaction.CompactionController.getCompactedRow(CompactionController.java:176)
> 	at org.apache.cassandra.db.compaction.CompactionController.getCompactedRow(CompactionController.java:182)
> 	at org.apache.cassandra.db.compaction.Scrubber.scrub(Scrubber.java:171)
> 	... 1 more
> Caused by: java.io.EOFException
> 	at java.io.RandomAccessFile.readFully(RandomAccessFile.java:399)
> 	at java.io.RandomAccessFile.readFully(RandomAccessFile.java:377)
> 	at org.apache.cassandra.utils.BytesReadTracker.readFully(BytesReadTracker.java:95)
> 	at org.apache.cassandra.utils.ByteBufferUtil.read(ByteBufferUtil.java:401)
> 	at org.apache.cassandra.utils.ByteBufferUtil.readWithLength(ByteBufferUtil.java:363)
> 	at org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:120)
> 	at org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:37)
> 	at org.apache.cassandra.db.ColumnFamilySerializer.deserializeColumns(ColumnFamilySerializer.java:144)
> 	at org.apache.cassandra.io.sstable.SSTableIdentityIterator.getColumnFamilyWithColumns(SSTableIdentityIterator.java:234)
> 	at org.apache.cassandra.db.compaction.PrecompactedRow.merge(PrecompactedRow.java:112)
> 	... 5 more
> {noformat}
> Since the purpose of offline scrub is to fix broken stuff, it should be more resilient
to broken stuff...



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