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From "Benedict (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-8192) AssertionError in Memory.java
Date Thu, 27 Nov 2014 16:38:13 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-8192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14227821#comment-14227821
] 

Benedict commented on CASSANDRA-8192:
-------------------------------------

If it's the data, it's likely a pretty simple issue of corruption and suboptimal error checking.
A compression metadata file is probably zero, so when we allocate memory to store it in, we
don't allocate any memory for it. Exactly how it ended up empty is another matter, and is
possibly a bug.

Try running {code}find . -iname *CompressionInfo.db -size 0{code} in your data directory

> AssertionError in Memory.java
> -----------------------------
>
>                 Key: CASSANDRA-8192
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8192
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: Windows-7-32 bit, 3GB RAM, Java 1.7.0_67
>            Reporter: Andreas Schnitzerling
>            Assignee: Joshua McKenzie
>             Fix For: 2.1.3
>
>         Attachments: cassandra.bat, cassandra.yaml, logdata-onlinedata-ka-196504-CompressionInfo.zip,
printChunkOffsetErrors.txt, system-compactions_in_progress-ka-47594-CompressionInfo.zip, system-sstable_activity-jb-25-Filter.zip,
system.log, system_AssertionTest.log
>
>
> Since update of 1 of 12 nodes from 2.1.0-rel to 2.1.1-rel Exception during start up.
> {panel:title=system.log}
> ERROR [SSTableBatchOpen:1] 2014-10-27 09:44:00,079 CassandraDaemon.java:153 - Exception
in thread Thread[SSTableBatchOpen:1,5,main]
> java.lang.AssertionError: null
> 	at org.apache.cassandra.io.util.Memory.size(Memory.java:307) ~[apache-cassandra-2.1.1.jar:2.1.1]
> 	at org.apache.cassandra.io.compress.CompressionMetadata.<init>(CompressionMetadata.java:135)
~[apache-cassandra-2.1.1.jar:2.1.1]
> 	at org.apache.cassandra.io.compress.CompressionMetadata.create(CompressionMetadata.java:83)
~[apache-cassandra-2.1.1.jar:2.1.1]
> 	at org.apache.cassandra.io.util.CompressedSegmentedFile$Builder.metadata(CompressedSegmentedFile.java:50)
~[apache-cassandra-2.1.1.jar:2.1.1]
> 	at org.apache.cassandra.io.util.CompressedPoolingSegmentedFile$Builder.complete(CompressedPoolingSegmentedFile.java:48)
~[apache-cassandra-2.1.1.jar:2.1.1]
> 	at org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:766) ~[apache-cassandra-2.1.1.jar:2.1.1]
> 	at org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:725) ~[apache-cassandra-2.1.1.jar:2.1.1]
> 	at org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:402) ~[apache-cassandra-2.1.1.jar:2.1.1]
> 	at org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:302) ~[apache-cassandra-2.1.1.jar:2.1.1]
> 	at org.apache.cassandra.io.sstable.SSTableReader$4.run(SSTableReader.java:438) ~[apache-cassandra-2.1.1.jar:2.1.1]
> 	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[na:1.7.0_55]
> 	at java.util.concurrent.FutureTask.run(Unknown Source) ~[na:1.7.0_55]
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.7.0_55]
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.7.0_55]
> 	at java.lang.Thread.run(Unknown Source) [na:1.7.0_55]
> {panel}
> In the attached log you can still see as well CASSANDRA-8069 and CASSANDRA-6283.



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