[HBASE-12801] Failed to truncate a table while maintaing binary region boundaries

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.94.11
• Fix Version/s: 1.0.0, 0.98.10, 1.1.0, 0.94.27
• Component/s: shell
• Hadoop Flags: Reviewed
• Assignee: Shaohui Liu
• Reporter: Shaohui Liu
• Created: 04/Jan/15 06:01
• Updated: 06/Apr/18 17:55
• Resolved: 13/Jan/15 03:32

Description

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

 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)

eg:

\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

Simple patch is using binary string instead of normal string.