alirezazamani commented on a change in pull request #741: Fix
ConcurrentModification exception in Workflow Garbage Collection
URL: https://github.com/apache/helix/pull/741#discussion_r377986318
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File path: helix-core/src/main/java/org/apache/helix/task/TaskUtil.java
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@@ -1040,26 +1040,39 @@ public static void purgeExpiredJobs(String workflow,
WorkflowConfig workflowConf
/**
* The function that loops through the all existing workflow contexts and
removes IdealState and
* workflow context of the workflow whose workflow config does not exist.
+ * Try-catch has been used to avoid concurrent modification exception while
doing deep copy. Since
+ * Map.keySet() can produce concurrent modification exception.
Review comment:
Done. Please let me know if it is still not clear.
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