Weiwei Yang created YARN-8521:
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Summary: NPE in AllocationTagsManager when a container is removed
more than once
Key: YARN-8521
URL: https://issues.apache.org/jira/browse/YARN-8521
Project: Hadoop YARN
Issue Type: Bug
Components: resourcemanager
Affects Versions: 3.1.0
Reporter: Weiwei Yang
Assignee: Weiwei Yang
We've seen sometimes there is NPE in AllocationTagsManager
{code}
private void removeTagFromInnerMap(Map<String, Long> innerMap, String tag) {
Long count = innerMap.get(tag);
if (count > 1) { // NPE
...
{code}
it seems \{{AllocationTagsManager#removeContainer}} somehow gets called more
than once for a same container.
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