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HBASE-26978 Update inmemory_compaction.adoc (#4372) 

Signed-off-by: Duo Zhang <zhangduo@apache.org>
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liangxs 2022-04-28 23:01:40 +08:00 committed by GitHub
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8
src/main/asciidoc/_chapters/inmemory_compaction.adoc
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@ -81,12 +81,12 @@ Note how the IN_MEMORY_COMPACTION attribute shows as part of the _METADATA_ map.
There is also a global configuration, _hbase.hregion.compacting.memstore.type_ which you can set in your _hbase-site.xml_ file. Use it to set the
default on creation of a new table (On creation of a column family Store, we look first to the column family configuration looking for the
_IN_MEMORY_COMPACTION_ setting, and if none, we then consult the _hbase.hregion.compacting.memstore.type_ value using its content; default is
_BASIC_).
_NONE_).
By default, new hbase system tables will have _BASIC_ in-memory compaction set. To specify otherwise,
on new table-creation, set _hbase.hregion.compacting.memstore.type_ to _NONE_ (Note, setting this value
By default, new hbase system tables will have _NONE_ in-memory compaction set. To specify otherwise,
on new table-creation, set _hbase.systemtables.compacting.memstore.type_ to _BASIC_ / _EAGER_ / _ADAPTIVE_ (Note, setting this value
post-creation of system tables will not have a retroactive effect; you will have to alter your tables
to set the in-memory attribute to _NONE_).
to set the in-memory attribute).
When an in-memory flush happens is calculated by dividing the configured region flush size (Set in the table descriptor
or read from _hbase.hregion.memstore.flush.size_) by the number of column families and then multiplying by