mnpoonia commented on a change in pull request #809: HBASE-23261 : Processing
ZK BadVersionException during node transition
URL: https://github.com/apache/hbase/pull/809#discussion_r344577337
##########
File path:
hbase-client/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKAssign.java
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@@ -868,7 +868,20 @@ public static int transitionNode(ZooKeeperWatcher zkw,
HRegionInfo region,
try {
rt = RegionTransition.createRegionTransition(
endState, region.getRegionName(), serverName, payload);
- if(!ZKUtil.setData(zkw, node, rt.toByteArray(), stat.getVersion())) {
+ boolean isDataSet;
+ try {
+ isDataSet = ZKUtil.setData(zkw, node, rt.toByteArray(),
stat.getVersion());
+ } catch (KeeperException.BadVersionException e) {
+ // handling specific failure - see HBASE-23261
+ // for other state changes, callers have some logic to handle Exception
+ if (!EventType.RS_ZK_REQUEST_REGION_SPLIT.equals(endState)) {
Review comment:
Is it okay to have a special case here. I think we can retry and that will
trigger the watchers of master. Am i missing something here.?
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