[HBASE-12657] The Region is not being split and far exceeds the desired maximum size.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.94.25
• Fix Version/s: 0.94.26
• Component/s: Compaction
• Hadoop Flags: Reviewed
• Assignee: Vladimir Rodionov
• Reporter: Vladimir Rodionov
• Created: 08/Dec/14 22:00
• Updated: 20/Nov/15 11:53
• Resolved: 11/Dec/14 21:24

Description

We are seeing this behavior when creating indexes in one of our environment.

When an index is being created, most of the "requests" go into a single region. The amount of time to create an index seems to take longer than usual and it can take days for the regions to compact and split after the index is created.

Here is a du of the HBase index table:

-bash-4.1$ sudo -su hdfs hadoop fs -du /hbase/43681
705          /hbase/43681/.tableinfo.0000000001
0            /hbase/43681/.tmp
27981697293  /hbase/43681/0492e22092e21d35fca8e779b21ec797
539687093    /hbase/43681/832298c4e975fc47210feb6bac3d2f71
560660531    /hbase/43681/be9bdb3bdf9365afe5fe90db4247d82c
7081938297   /hbase/43681/cd440e524f96fbe0719b2fe969848560
6297860287   /hbase/43681/dc893a2d8daa08c689dc69e6bb2c5b50
7189607722   /hbase/43681/ffbceaea5e2f142dbe6cd4cbeacc00e8

...