[jira] [Commented] (CASSANDRA-9686) FSReadError and LEAK DETECTED after upgrading

["Stefania (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-9686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14609433#comment-14609433 ] 

Stefania commented on CASSANDRA-9686:
-------------------------------------

The LEAK errors are a consequence of the exception. We should fix it but we don't need to block rc2 since the garbage collector will release the resources when it collects the reader. In {{SSTableReader.open()}} we should put a {{try}} to make sure we close the reader in case of exception and increase the reference count by one just before returning it (but before closing it). 

I tried to reproduce the CompressionMetadata exception by interrupting a stress write on 2.1.7 and then launching 2.2.0-rc1 but I couldn't. The exception is simply saying that there are no compression chunks, which I assume there should be. Without the files it's difficult to say what the problem is.

[~Andie78] it would help if you could provide us with some of the system files causing the problem (one system cf such as compactions_in_progress should do), along with cassandra.yaml (before and after the upgrade if different) and any steps you took during the upgrade. If you cannot provide the data files, a log file at DEBUG level might help a bit more.

There is also this warning that looks concerning:

{code}
WARN  [main] 2015-06-29 16:58:12,169 CLibrary.java:72 - JNA link failure, one or more native method will be unavailable.
{code}

At debug level it should print the cause of the failure. Perhaps it's due to a 32-bit incompatibility that we introduced recently, or perhaps it has always been there, I'm not sure. 

> FSReadError and LEAK DETECTED after upgrading
> ---------------------------------------------
>
>                 Key: CASSANDRA-9686
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9686
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: Windows-7-32 bit, 3.2GB RAM, Java 1.7.0_55
>            Reporter: Andreas Schnitzerling
>            Assignee: Stefania
>             Fix For: 2.2.x
>
>         Attachments: system.log
>
>
> After upgrading one of 15 nodes from 2.1.7 to 2.2.0-rc1 I get FSReadError and LEAK DETECTED on start. Deleting the listed files, the failure goes away.
> {code:title=system.log}
> ERROR [SSTableBatchOpen:1] 2015-06-29 14:38:34,554 DebuggableThreadPoolExecutor.java:242 - Error in ThreadPoolExecutor
> org.apache.cassandra.io.FSReadError: java.io.IOException: Compressed file with 0 chunks encountered: java.io.DataInputStream@1c42271
> 	at org.apache.cassandra.io.compress.CompressionMetadata.readChunkOffsets(CompressionMetadata.java:178) ~[apache-cassandra-2.2.0-rc1.jar:2.2.0-rc1]
> 	at org.apache.cassandra.io.compress.CompressionMetadata.<init>(CompressionMetadata.java:117) ~[apache-cassandra-2.2.0-rc1.jar:2.2.0-rc1]
> 	at org.apache.cassandra.io.compress.CompressionMetadata.create(CompressionMetadata.java:86) ~[apache-cassandra-2.2.0-rc1.jar:2.2.0-rc1]
> 	at org.apache.cassandra.io.util.CompressedSegmentedFile$Builder.metadata(CompressedSegmentedFile.java:142) ~[apache-cassandra-2.2.0-rc1.jar:2.2.0-rc1]
> 	at org.apache.cassandra.io.util.CompressedPoolingSegmentedFile$Builder.complete(CompressedPoolingSegmentedFile.java:101) ~[apache-cassandra-2.2.0-rc1.jar:2.2.0-rc1]
> 	at org.apache.cassandra.io.util.SegmentedFile$Builder.complete(SegmentedFile.java:178) ~[apache-cassandra-2.2.0-rc1.jar:2.2.0-rc1]
> 	at org.apache.cassandra.io.sstable.format.SSTableReader.load(SSTableReader.java:681) ~[apache-cassandra-2.2.0-rc1.jar:2.2.0-rc1]
> 	at org.apache.cassandra.io.sstable.format.SSTableReader.load(SSTableReader.java:644) ~[apache-cassandra-2.2.0-rc1.jar:2.2.0-rc1]
> 	at org.apache.cassandra.io.sstable.format.SSTableReader.open(SSTableReader.java:443) ~[apache-cassandra-2.2.0-rc1.jar:2.2.0-rc1]
> 	at org.apache.cassandra.io.sstable.format.SSTableReader.open(SSTableReader.java:350) ~[apache-cassandra-2.2.0-rc1.jar:2.2.0-rc1]
> 	at org.apache.cassandra.io.sstable.format.SSTableReader$4.run(SSTableReader.java:480) ~[apache-cassandra-2.2.0-rc1.jar:2.2.0-rc1]
> 	at java.util.concurrent.Executors$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$Worker.run(Unknown Source) [na:1.7.0_55]
> 	at java.lang.Thread.run(Unknown Source) [na:1.7.0_55]
> Caused by: java.io.IOException: Compressed file with 0 chunks encountered: java.io.DataInputStream@1c42271
> 	at org.apache.cassandra.io.compress.CompressionMetadata.readChunkOffsets(CompressionMetadata.java:174) ~[apache-cassandra-2.2.0-rc1.jar:2.2.0-rc1]
> 	... 15 common frames omitted
> ERROR [Reference-Reaper:1] 2015-06-29 14:38:34,734 Ref.java:189 - LEAK DETECTED: a reference (org.apache.cassandra.utils.concurrent.Ref$State@3e547f) to class org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier@1926439:D:\Programme\Cassandra\data\data\system\compactions_in_progress\system-compactions_in_progress-ka-6866 was not released before the reference was garbage collected
> {code}



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