[jira] [Commented] (HBASE-4196) TableRecordReader may skip first row of region
[ https://issues.apache.org/jira/browse/HBASE-4196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13084735#comment-13084735 ] Hudson commented on HBASE-4196: --- Integrated in HBase-TRUNK #2113 (See [https://builds.apache.org/job/HBase-TRUNK/2113/]) HBASE-4196 TableRecordReader may skip first row of region stack : Files : * /hbase/trunk/CHANGES.txt * /hbase/trunk/src/main/java/org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.java * /hbase/trunk/src/main/java/org/apache/hadoop/hbase/mapred/TableRecordReaderImpl.java > TableRecordReader may skip first row of region > -- > > Key: HBASE-4196 > URL: https://issues.apache.org/jira/browse/HBASE-4196 > Project: HBase > Issue Type: Bug > Components: mapreduce >Affects Versions: 0.90.4 >Reporter: Jan Lukavsky >Assignee: Ming Ma > Fix For: 0.90.5 > > Attachments: HBASE-4196-trunk.patch, HBASE-4196-trunk.patch, > HBASE-4196-trunk.patch > > > After the following scenario, the first record of region is skipped, without > being sent to Mapper: > - the reader is initialized with TableRecordReader.init() > - then nextKeyValue is called, causing call to scanner.next() - here > ScannerTimeoutException occurs > - the scanner is restarted by call to restart() and then *two* calls to > scanner.next() occur, causing we have lost the first row -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HBASE-4196) TableRecordReader may skip first row of region
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https://issues.apache.org/jira/browse/HBASE-4196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13084482#comment-13084482
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Ted Yu commented on HBASE-4196:
---
+1 on patch version 2.
Minor comment on formatting: indentation should increase for
this.scanner.next():
{code}
+restart(lastSuccessfulRow);
this.scanner.next();// skip presumed already mapped row
+ }
{code}
> TableRecordReader may skip first row of region
> --
>
> Key: HBASE-4196
> URL: https://issues.apache.org/jira/browse/HBASE-4196
> Project: HBase
> Issue Type: Bug
> Components: mapreduce
>Affects Versions: 0.90.4
>Reporter: Jan Lukavsky
>Assignee: Ming Ma
> Attachments: HBASE-4196-trunk.patch, HBASE-4196-trunk.patch
>
>
> After the following scenario, the first record of region is skipped, without
> being sent to Mapper:
> - the reader is initialized with TableRecordReader.init()
> - then nextKeyValue is called, causing call to scanner.next() - here
> ScannerTimeoutException occurs
> - the scanner is restarted by call to restart() and then *two* calls to
> scanner.next() occur, causing we have lost the first row
--
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For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (HBASE-4196) TableRecordReader may skip first row of region
[ https://issues.apache.org/jira/browse/HBASE-4196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13084421#comment-13084421 ] Ted Yu commented on HBASE-4196: --- Patch looks good. There're two TableRecordReaderImpl.java files, one under mapred and one under mapreduce. Both of them should be fixed. > TableRecordReader may skip first row of region > -- > > Key: HBASE-4196 > URL: https://issues.apache.org/jira/browse/HBASE-4196 > Project: HBase > Issue Type: Bug > Components: mapreduce >Affects Versions: 0.90.4 >Reporter: Jan Lukavsky >Assignee: Ming Ma > Attachments: HBASE-4196-trunk.patch > > > After the following scenario, the first record of region is skipped, without > being sent to Mapper: > - the reader is initialized with TableRecordReader.init() > - then nextKeyValue is called, causing call to scanner.next() - here > ScannerTimeoutException occurs > - the scanner is restarted by call to restart() and then *two* calls to > scanner.next() occur, causing we have lost the first row -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira
