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https://issues.apache.org/jira/browse/HBASE-1829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12756273#action_12756273
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stack commented on HBASE-1829:
------------------------------
Or, rather, I got this when I tried the patch (RowCounter on a table loaded up
with PE):
{code}
09/09/16 15:56:23 INFO zookeeper.ClientCnxn: Server connection successful
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -1
at
org.apache.hadoop.hbase.KeyValue$KeyComparator.compare(KeyValue.java:1722)
at
org.apache.hadoop.hbase.KeyValue$KeyComparator.compare(KeyValue.java:1758)
at
org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.getSplits(TableInputFormatBase.java:296)
at org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:885)
at
org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:779)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:432)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:447)
at
org.apache.hadoop.hbase.mapreduce.RowCounter.main(RowCounter.java:125)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
at org.apache.hadoop.hbase.mapreduce.Driver.main(Driver.java:41)
{code}
> Make use of start/stop row in TableInputFormat
> ----------------------------------------------
>
> Key: HBASE-1829
> URL: https://issues.apache.org/jira/browse/HBASE-1829
> Project: Hadoop HBase
> Issue Type: Improvement
> Components: mapred
> Affects Versions: 0.20.0
> Reporter: Lars George
> Assignee: Lars George
> Priority: Minor
> Fix For: 0.20.1
>
> Attachments: HBASE-1829.patch
>
>
> Since we can now specify a start and stop row with the Scan that is handed to
> the TIF we can reduce the splits to the regions that contain these rows. That
> allows to test large MR jobs on a single region for example.
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