[HBASE-26143] The default value of 'hbase.hregion.memstore.mslab.indexchunksize.percent' should be 0

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.0.0-alpha-1, 2.4.0
• Assignee: Unassigned
• Reporter: chenglei
• Created: 27/Jul/21 09:41
• Updated: 09/Oct/21 08:57

Description

The default value of hbase.hregion.memstore.mslab.indexchunksize.percent introduced by HBASE-24892 is 0.1, but we use DefaultMemStore by default , which has no IndexChunk and ChunkCreator.indexChunksPool is useless(IndexChunk is only used by CompactingMemStore and CellChunkMap, ), so the hbase.hregion.memstore.mslab.indexchunksize.percent should be 0 by default to save memory space. Only when we use CompactingMemStore and CellChunkMap, it is meaningful to set hbase.hregion.memstore.mslab.indexchunksize.percent by user.
Howerver, because existing bug in ChunkCreator, it depends on HBASE-26142

Issue Links

• depends upon: HBASE-26142 NullPointerException when set 'hbase.hregion.memstore.mslab.indexchunksize.percent' to zero
• relates to: HBASE-24892 config 'hbase.hregion.memstore.mslab.indexchunksize' not be used