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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14660) AssertionError found when using offheap BucketCache with assertion enabled
Date Wed, 28 Oct 2015 09:09:27 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14978010#comment-14978010
] 

Anoop Sam John commented on HBASE-14660:
----------------------------------------

I just asked.  FT is always better and specifically if it is not having much of overhead.
 We have less overhead as we dont spin a cluster up.
+1

> AssertionError found when using offheap BucketCache with assertion enabled
> --------------------------------------------------------------------------
>
>                 Key: HBASE-14660
>                 URL: https://issues.apache.org/jira/browse/HBASE-14660
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: Yu Li
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 2.0.0
>
>         Attachments: HBASE-14660.patch, HBASE-14660_1.patch, HBASE-14660_2.patch, HBASE-14660_2.patch,
HBASE-14660_3.patch
>
>
> During perf verification of HBASE-14463, found offheap BucketCache not working with assertion
enabled in hbase-env.sh:
> {noformat}
> export HBASE_OPTS="-ea -XX:+HeapDumpOnOutOfMemoryError -XX:+UseConcMarkSweepGC"
> {noformat}
> And the error when running PE tool is like:
> {noformat}
> 15/10/21 16:06:34 INFO client.AsyncProcess: #10, table=TestTable, attempt=10/21 failed=20ops,
last exception: java.io.IOException: java.io.IOException
>         at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2181)
>         at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:106)
>         at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:130)
>         at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:107)
>         at java.lang.Thread.run(Thread.java:744)
> Caused by: java.lang.AssertionError
>         at org.apache.hadoop.hbase.OffheapKeyValue.<init>(OffheapKeyValue.java:52)
>         at org.apache.hadoop.hbase.io.hfile.HFileReaderImpl$HFileScannerImpl$ShareableMemoryOffheapKeyValue.<init>(HFileReaderImpl.java:1003)
>         at org.apache.hadoop.hbase.io.hfile.HFileReaderImpl$HFileScannerImpl.getCell(HFileReaderImpl.java:949)
>         at org.apache.hadoop.hbase.regionserver.StoreFileScanner.reseek(StoreFileScanner.java:201)
>         at org.apache.hadoop.hbase.regionserver.NonLazyKeyValueScanner.doRealSeek(NonLazyKeyValueScanner.java:55)
>         at org.apache.hadoop.hbase.regionserver.KeyValueHeap.generalizedSeek(KeyValueHeap.java:323)
>         at org.apache.hadoop.hbase.regionserver.KeyValueHeap.requestSeek(KeyValueHeap.java:279)
>         at org.apache.hadoop.hbase.regionserver.StoreScanner.reseek(StoreScanner.java:825)
>         at org.apache.hadoop.hbase.regionserver.StoreScanner.seekAsDirection(StoreScanner.java:813)
>         at org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:641)
>         at org.apache.hadoop.hbase.regionserver.KeyValueHeap.next(KeyValueHeap.java:153)
>         at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.populateResult(HRegion.java:5649)
>         at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextInternal(HRegion.java:5795)
>         at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextRaw(HRegion.java:5568)
>         at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.next(HRegion.java:5544)
>         at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.next(HRegion.java:5530)
>         at org.apache.hadoop.hbase.regionserver.RSRpcServices.get(RSRpcServices.java:2044)
>         at org.apache.hadoop.hbase.regionserver.RSRpcServices.doNonAtomicRegionMutation(RSRpcServices.java:663)
>         at org.apache.hadoop.hbase.regionserver.RSRpcServices.multi(RSRpcServices.java:2156)
> {noformat}
> [~ram_krish] and [~anoop.hbase], mind to take a look?



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