StevenLuMT opened a new pull request #3103:
URL: https://github.com/apache/bookkeeper/pull/3103
Descriptions of the changes in this PR:
### Motivation
add async mode for :entry location index's rocksdb write:
1) default sync mode: not change the original logic
2) async mode : need update config to open, this mode is to speed up writing
sync is different from async：
- sync mode:
1. create a batch;
2. add msg to the batch
3. call method(batch.flush) to flush the batch
- sync mode:
1. just call method(locationsDb.sync) to write the data
2. the rocksdb server will be timed to flush the data
### Changes
1. add async or sync for :location rocksdb write
2. add switch to open this feature, default not open, use default sync
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