smengcl commented on a change in pull request #137: HDDS-2455. Implement
MiniOzoneHAClusterImpl#getOMLeader
URL: https://github.com/apache/hadoop-ozone/pull/137#discussion_r348906923
##########
File path:
hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/MiniOzoneHAClusterImpl.java
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@@ -118,6 +118,19 @@ public OzoneManager getOzoneManager(String omNodeId) {
return this.ozoneManagerMap.get(omNodeId);
}
+ /**
+ * Get OzoneManager leader object.
+ * @return OzoneManager object, could return null if there isn't a leader.
+ */
+ public OzoneManager getOMLeader() {
+ for (OzoneManager ozoneManager : this.ozoneManagers) {
+ if (ozoneManager.isLeader()) {
+ return ozoneManager;
+ }
Review comment:
Indeed this could be a problem. I talked to Arpit about this. It turns out
there could be two OMs asserting themselves are both leaders in a short while,
or there could be no leader. I will update this method to handle those two
cases to some extent.
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