apurtell commented on a change in pull request #390: HBASE-22623 - Add
RegionObserver coprocessor hook for preWALAppend
URL: https://github.com/apache/hbase/pull/390#discussion_r312653014
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File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
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@@ -7951,6 +7951,11 @@ private WriteEntry doWALAppend(WALEdit walEdit,
Durability durability, List<UUID
if (walEdit.isReplay()) {
walKey.setOrigLogSeqNum(origLogSeqNum);
}
+ //don't call the coproc hook for writes to the WAL caused by
+ //system lifecycle events like flushes or compactions
Review comment:
No this API is so we can get the WALKey and add an extended attribute just
before it commits to the WAL from the RPC context. See above discussion and
JIRA for context.
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