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https://issues.apache.org/jira/browse/HBASE-11990?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Niels Basjes updated HBASE-11990:
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Attachment: HBASE-11990-20140921-v9.patch
This patch contains the following:
hbase-client
- In Scan the 'setRowPrefixFilter' (just a method rename, I have the feeling
this name is better)
hbase-server
- I split the class TestFilterWithScanLimits into two parts: The testing
facility (FilterTestingCluster) and the actual tests.
- A new testing class (that uses FilterTestingCluster) TestScanRowPrefix
intended to test the setRowPrefixFilter and the effects in relation to
setFilter.
hbase-book
- Small modification in the HBase book.
> Make setting the start and stop row for a specific prefix easier
> ----------------------------------------------------------------
>
> Key: HBASE-11990
> URL: https://issues.apache.org/jira/browse/HBASE-11990
> Project: HBase
> Issue Type: New Feature
> Components: Client
> Reporter: Niels Basjes
> Attachments: 11990v4.txt, HBASE-11990-20140916-v2.patch,
> HBASE-11990-20140916-v3.patch, HBASE-11990-20140916-v5.patch,
> HBASE-11990-20140916-v6.patch, HBASE-11990-20140916.patch,
> HBASE-11990-20140917-v7.patch, HBASE-11990-20140919-v8.patch,
> HBASE-11990-20140921-v9.patch
>
>
> If you want to set a scan from your application to scan for a specific row
> prefix this is actually quite hard.
> As described in several places you can set the startRow to the prefix; yet
> the stopRow should be set to the prefix '+1'
> If the prefix 'ASCII' put into a byte[] then this is easy because you can
> simply increment the last byte of the array.
> But if your application uses real binary rowids you may run into the scenario
> that your prefix is something like
> {code}{ 0x12, 0x23, 0xFF, 0xFF }{code} Then the increment should be {code}{
> 0x12, 0x24 }{code}
> I have prepared a proposed patch that makes setting these values correctly a
> lot easier.
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