Clarify relationship between partition.syncOnWrite and
apacheDS.syncPeriodMillis configuration attributes
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Key: DIRSERVER-1321
URL: https://issues.apache.org/jira/browse/DIRSERVER-1321
Project: Directory ApacheDS
Issue Type: Improvement
Components: core
Affects Versions: 1.5.4
Reporter: Alex Karasulu
Right now a partition can be configured to sync to disk on each write
operation. This is a per partition configuration parameter. Then there is
this system wide syncPeriodMillis parameter which can be set to sync up all the
partitions on some interval specified. When 0 no sync requests to the core are
made.
The question is does this system wide parameter bypass per partition
syncOnWrite settings?
This solution really stinks because the configuration is spread across two
parts of the server and the correlation is hard to grasp because of this.
Eventually we need to centralize the schedular service (Quartz) to have each
partition register for cyclic triggers that allow it to sync up writes
periodically if that is preferred. Otherwise it syncs when each write occurs.
We can thus get ride of this syncOnWrite attribute for partitions and just have
a syncMillis parameter. If set to 0 then syncs occur on each write. If set to
some interval then writes to disk will be cached.
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