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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-12270) A bug in the bucket cache, with cache blocks on write enabled
Date Fri, 26 Dec 2014 17:34:14 GMT

     [ https://issues.apache.org/jira/browse/HBASE-12270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Purtell updated HBASE-12270:
-----------------------------------
    Fix Version/s: 0.98.10
                   2.0.0

> A bug in the bucket cache, with cache blocks on write enabled
> -------------------------------------------------------------
>
>                 Key: HBASE-12270
>                 URL: https://issues.apache.org/jira/browse/HBASE-12270
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.94.11, 0.98.6.1
>         Environment: I can reproduce it on a simple 2 node cluster, one running the master
and another running a RS. I was testing on ec2.
> I used the following configurations for the cluster. 
> hbase-env:HBASE_REGIONSERVER_OPTS=-Xmx2G -XX:MaxDirectMemorySize=5G -XX:CMSInitiatingOccupancyFraction=88
-XX:+AggressiveOpts -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -Xlog gc:/tmp/hbase-regionserver-gc.log
> hbase-site:
> hbase.bucketcache.ioengine=offheap
> hbase.bucketcache.size=4196
> hbase.rs.cacheblocksonwrite=true
> hfile.block.index.cacheonwrite=true
> hfile.block.bloom.cacheonwrite=true
>            Reporter: Khaled Elmeleegy
>            Assignee: Liu Shaohui
>            Priority: Critical
>             Fix For: 2.0.0, 0.98.10, 1.1.0
>
>         Attachments: HBASE-12270-v1.diff, TestHBase.java, TestKey.java
>
>
> In my experiments, I have writers streaming their output to HBase. The reader powers
a web page and does this scatter/gather, where it reads 1000 keys written last and passes
them the the front end. With this workload, I get the exception below at the region server.
Again, I am using HBAse (0.98.6.1). Any help is appreciated.
> 2014-10-10 15:06:44,173 ERROR [B.DefaultRpcServer.handler=62,queue=2,port=60020] ipc.RpcServer:
Unexpected throwable object 
> java.lang.IllegalArgumentException
>   at java.nio.Buffer.position(Buffer.java:236)
>  at org.apache.hadoop.hbase.util.ByteBufferUtils.skip(ByteBufferUtils.java:434)
>       at org.apache.hadoop.hbase.io.hfile.HFileReaderV2$ScannerV2.readKeyValueLen(HFileReaderV2.java:849)
>       at org.apache.hadoop.hbase.io.hfile.HFileReaderV2$ScannerV2.next(HFileReaderV2.java:760)
>  at org.apache.hadoop.hbase.regionserver.StoreFileScanner.seekAtOrAfter(StoreFileScanner.java:248)
>    at org.apache.hadoop.hbase.regionserver.StoreFileScanner.seek(StoreFileScanner.java:152)
>       at org.apache.hadoop.hbase.regionserver.StoreScanner.seekScanners(StoreScanner.java:317)
>  at org.apache.hadoop.hbase.regionserver.StoreScanner.<init>(StoreScanner.java:176)
>   at org.apache.hadoop.hbase.regionserver.HStore.getScanner(HStore.java:1780)
>   at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.<init>(HRegion.java:3758)
>   at org.apache.hadoop.hbase.regionserver.HRegion.instantiateRegionScanner(HRegion.java:1950)
>   at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1936)
>         at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1913)
>       at org.apache.hadoop.hbase.regionserver.HRegionServer.scan(HRegionServer.java:3157)
>       at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29587)
>    at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2027)
>     at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:108)
>      at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:114)
>    at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:94)
>  at java.lang.Thread.run(Thread.java:744)



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