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https://issues.apache.org/jira/browse/HBASE-14838?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Elser updated HBASE-14838:
-------------------------------
Description:
SImpleRegionNormalizer does not merge empty region of a table
Steps to repro:
- Create an empty table with few, say 5-6 regions without any data in any of
them
- Verify hbase:meta table to verify the regions for the table or check HMaster
UI
- Enable normalizer switch and normalization for this table
- Run normalizer, by 'normalize' command from hbase shell
- Verify the regions for table by scanning hbase:meta table or checking HMaster
web UI
The empty regions are not merged on running the region normalizer. This seems
to be an edge case with completely empty regions since the Normalizer checks
for: smallestRegion (in this case 0 size) + smallestNeighborOfSmallestRegion
(in this case 0 size) > avg region size (in this case 0 size)
thanks to [~elserj] for verifying this from the source code side
was:
Region Normalizer does not merge empty region of a table
Steps to repro:
- Create an empty table with few, say 5-6 regions without any data in any of
them
- Verify hbase:meta table to verify the regions for the table or check HMaster
UI
- Enable normalizer switch and normalization for this table
- Run normalizer, by 'normalize' command from hbase shell
- Verify the regions for table by scanning hbase:meta table or checking HMaster
web UI
The empty regions are not merged on running the region normalizer. This seems
to be an edge case with completely empty regions since the Normalizer checks
for: smallestRegion (in this case 0 size) + smallestNeighborOfSmallestRegion
(in this case 0 size) > avg region size (in this case 0 size)
thanks to [~elserj] for verifying this from the source code side
> Region Normalizer does not merge empty region of a table
> --------------------------------------------------------
>
> Key: HBASE-14838
> URL: https://issues.apache.org/jira/browse/HBASE-14838
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.2.0, 1.1.2
> Reporter: Romil Choksi
>
> SImpleRegionNormalizer does not merge empty region of a table
> Steps to repro:
> - Create an empty table with few, say 5-6 regions without any data in any of
> them
> - Verify hbase:meta table to verify the regions for the table or check
> HMaster UI
> - Enable normalizer switch and normalization for this table
> - Run normalizer, by 'normalize' command from hbase shell
> - Verify the regions for table by scanning hbase:meta table or checking
> HMaster web UI
> The empty regions are not merged on running the region normalizer. This seems
> to be an edge case with completely empty regions since the Normalizer checks
> for: smallestRegion (in this case 0 size) + smallestNeighborOfSmallestRegion
> (in this case 0 size) > avg region size (in this case 0 size)
> thanks to [~elserj] for verifying this from the source code side
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