Romil Choksi created HBASE-16059:
------------------------------------
Summary: Region normalizer failed to trigger merge action where
expected
Key: HBASE-16059
URL: https://issues.apache.org/jira/browse/HBASE-16059
Project: HBase
Issue Type: Bug
Components: master
Reporter: Romil Choksi
Fix For: 2.0.0
Region normalizer failed to trigger merge action where expected
Steps to reproduce:
- Pre-split the test table into 5 regions with keys 1,3,7,8
- Insert some data for each of the split. 27K rows for regions starting with
key 1, and 100K rows for each of the regions with start key 3,7 and 8
- Scan the test table, and verify that these regions exists - 1) STARTKEY =>
‘' ENDKEY => ’1’ 2) STARTKEY => ’1’ ENDKEY => ’3’
- Turn on normalization, verify normalization switch is enabled and that
normalization is true for test table
- Run normalizer a few times
- Scan test table again, verify that regions don’t exist anymore 1) STARTKEY
=> ‘' ENDKEY => ’1’ 2) STARTKEY => ’1’ ENDKEY => ’3’, but instead a new
region is created with STARTKEY => ’’ ENDKEY => ’3’
The test now fails, with the last step failing at assertion.
Looking into the Master log, I see that normalization plan was computed for the
test table but it decides that no normalization is needed for the test table,
and that the regions look good.
{code:title = Master.log}
2016-06-17 00:41:46,895 DEBUG [B.defaultRpcServer.handler=4,queue=1,port=20000]
normalizer.SimpleRegionNormalizer: Computing normalization plan for table:
table_zrof6ea383, number of regions: 5
2016-06-17 00:41:46,895 DEBUG [B.defaultRpcServer.handler=4,queue=1,port=20000]
normalizer.SimpleRegionNormalizer: Table table_zrof6ea383, total aggregated
regions size: 13
2016-06-17 00:41:46,896 DEBUG [B.defaultRpcServer.handler=4,queue=1,port=20000]
normalizer.SimpleRegionNormalizer: Table table_zrof6ea383, average region size:
2.6
2016-06-17 00:41:46,896 DEBUG [B.defaultRpcServer.handler=4,queue=1,port=20000]
normalizer.SimpleRegionNormalizer: No normalization needed, regions look good
for table: table_zrof6ea383
{code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
