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https://issues.apache.org/jira/browse/HBASE-11990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14138932#comment-14138932
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Niels Basjes commented on HBASE-11990:
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[~lhofhansl] Sorry, no that doesn't work.
Simply appending 0x00 does not give the correct result (see also HBASE-9035 ).
Assume I have these rowids (note: I actually tested this to be 100% sure)
{code}
{ 0x12, 0x23, 0xFF, 0xFF }
{ 0x12, 0x23, 0xFF, 0xFF, 0x00 }
{ 0x12, 0x23, 0xFF, 0xFF, 0x01 }
{ 0x12, 0x24 }
{ 0x12, 0x24, 0x00 }
{ 0x12, 0x24, 0x00, 0x00 }
{code}
And I want all rows with prefix
{code}
{ 0x12, 0x23, 0xFF, 0xFF }
{code}
Then using for the stopRow
{code}
{ 0x12, 0x23, 0xFF, 0xFF, 0x00 }
{code}
does not give me the wanted rows.
If I use
{code}
{ 0x12, 0x24 }
{code}
I do get exactly what I expected.
Like I said in the original description: Setting the right value is actually
pretty hard.
> 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
>
>
> 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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