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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18030) Negative tag length for hbase block/hfile
Date Fri, 12 May 2017 10:05:06 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16007907#comment-16007907

ramkrishna.s.vasudevan commented on HBASE-18030:

Duplicated tags I had found the problem already for sure. But did not expect the tags to grow
in length because in KV construction we already had a check to see if tags is greater than
Tag.MAXLEN. So here it is Short overflow, so even that check would have been bypassed.
Also we need fix in Storefile etc also if this negative overflow happens. 

> Negative tag length for hbase block/hfile
> -----------------------------------------
>                 Key: HBASE-18030
>                 URL: https://issues.apache.org/jira/browse/HBASE-18030
>             Project: HBase
>          Issue Type: Bug
>          Components: hbase, regionserver
>    Affects Versions: 1.1.2
>            Reporter: Abhishek Kumar
>            Assignee: Anoop Sam John
>            Priority: Critical
>         Attachments: HBASE-18030_initial.patch
> 2017-04-29 14:24:14,135 ERROR [B.fifo.QRpcServer.handler=49,queue=1,port=16020] ipc.RpcServer:
Unexpected throwable object java.lang.IllegalStateException: Invalid currTagsLen -32712. Block
offset: 3707853, block length: 72841, position: 0 (without header). at org.apache.hadoop.hbase.io.hfile.HFileReaderV3$ScannerV3.checkTagsLen(HFileReaderV3.java:226)
> I am not not using any hbase tags feature.
> The Increment operation from the application side is triggering this error. The same
is happening when scanner is run on this table. It feels that one or more particular HFile
block is corrupt (with negative tagLength).
> hbase(main):007:0> scan 'table-name', {LIMIT=>1,STARTROW=>'ad:event_count:a'}
> Returning the result
> hbase(main):008:0> scan 'table-name', {LIMIT=>1,STARTROW=>'ad:event_count:b'}
> ROW                                                         COLUMN+CELL             
> ERROR: java.io.IOException: java.lang.IllegalStateException: Invalid currTagsLen -32701.
Block offset: 272031, block length: 72441, position: 32487 (without header).
> 	at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.handleException(HRegion.java:5607)
> 	at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.<init>(HRegion.java:5579)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.instantiateRegionScanner(HRegion.java:2627)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:2613)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:2595)
> 	at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2282)
> 	at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:32295)

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