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https://issues.apache.org/jira/browse/HBASE-5140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13181572#comment-13181572
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Zhihong Yu edited comment on HBASE-5140 at 1/6/12 8:40 PM:
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I suggest utilizing this method in HTable:
{code}
public Pair<byte[][],byte[][]> getStartEndKeys() throws IOException {
{code}
i.e. start and end keys returned by the above method are passed to the splitter
interface.
was (Author: zhi...@ebaysf.com):
I suggest utilizing this method in HTable:
{code}
public Pair<byte[][],byte[][]> getStartEndKeys() throws IOException {
{code}
i.e. start and end keys are passed to the splitter interface.
> TableInputFormat subclass to allow N number of splits per region during MR
> jobs
> -------------------------------------------------------------------------------
>
> Key: HBASE-5140
> URL: https://issues.apache.org/jira/browse/HBASE-5140
> Project: HBase
> Issue Type: New Feature
> Components: mapreduce
> Reporter: Josh Wymer
> Priority: Trivial
> Original Estimate: 72h
> Remaining Estimate: 72h
>
> In regards to [HBASE-5138|https://issues.apache.org/jira/browse/HBASE-5138] I
> am working on a subclass for the TableInputFormat class that overrides
> getSplits in order to generate N number of splits per regions and/or N number
> of splits per job. The idea is to convert the startKey and endKey for each
> region from byte[] to BigDecimal, take the difference, divide by N, convert
> back to byte[] and generate splits on the resulting values. Assuming your
> keys are fully distributed this should generate splits at nearly the same
> number of rows per split. Any suggestions on this issue are welcome.
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