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https://issues.apache.org/jira/browse/HBASE-12801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14267264#comment-14267264
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Liu Shaohui commented on HBASE-12801:
-------------------------------------
[~busbey]
try
{code}
create 't1', 'f1', {NUMREGIONS => 256, SPLITALGO => 'UniformSplit'}
truncate_preserve 't1'
{code}
If you test the trunk code, you should test with a Hmaster without
truncateTable api.
See: admin.rb #399
> Failed to truncate a table while maintaing binary region boundaries
> -------------------------------------------------------------------
>
> Key: HBASE-12801
> URL: https://issues.apache.org/jira/browse/HBASE-12801
> Project: HBase
> Issue Type: Bug
> Components: shell
> Affects Versions: 0.94.11
> Reporter: Liu Shaohui
> Assignee: Liu Shaohui
> Priority: Minor
> Fix For: 1.0.0, 2.0.0, 0.98.10, 0.94.28
>
> Attachments: HBASE-12801-0.94-v1.diff, HBASE-12801-trunk-v1.diff
>
>
> Binary region boundaries become wrong during
> converting byte array to normal string, and back to byte array in
> truncate_preserve of admin.rb, which makes the truncation of table failed.
> See: truncate_preserve method in admin.rb
> {code}
> splits = h_table.getRegionLocations().keys().map{|i|
> Bytes.toString(i.getStartKey)}.delete_if{|k| k == ""}.to_java :String
> splits = org.apache.hadoop.hbase.util.Bytes.toByteArrays(splits)
> {code}
> eg:
> {code}
> \xFA\x00\x00\x00\x00\x00\x00\x00 -> \xEF\xBF\xBD\x00\x00\x00\x00\x00\x00\x00
> \xFC\x00\x00\x00\x00\x00\x00\x00 -> \xEF\xBF\xBD\x00\x00\x00\x00\x00\x00\x00
> {code}
> Simple patch is using binary string instead of normal string.
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