[HBASE-12078] Missing Data when scanning using PREFIX_TREE DATA-BLOCK-ENCODING

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.98.6.1
• Fix Version/s: 0.98.7, 0.99.1

Environment

CentOS 6.3
hadoop 2.5.0(hdfs)
hadoop 2.2.0(hbase)
hbase 0.98.6.1
sun-jdk 1.7.0_67-b01

• Hadoop Flags: Reviewed
• Assignee: Duo Zhang
• Reporter: Duo Zhang
• Created: 24/Sep/14 07:14
• Updated: 06/Apr/18 17:55
• Resolved: 02/Oct/14 00:04

Description

our row key is combined with two ints, and we found that sometimes when we using only the first int part to scan, the result returned may missing some rows. But when we dump the whole hfile, the row is still there.

We have written a testcase to reproduce the bug. It works like this:

put 1-12345
put 12345-0x01000000
put 12345-0x01010000
put 12345-0x02000000
put 12345-0x02020000
put 12345-0x03000000
put 12345-0x03030000
put 12345-0x04000000
put 12345-0x04040000

flush memstore

then scan using 12345，the returned row key will be 12345-0x20000000(12345-0x10000000 expected)

Issue Links

• is related to: HBASE-11838 Enable PREFIX_TREE in integration tests