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https://issues.apache.org/jira/browse/MAPREDUCE-3460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13158714#comment-13158714
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Hitesh Shah commented on MAPREDUCE-3460:
----------------------------------------
Based on Sid's theory, the problem would be in
RmContainerAllocator#getContainerReqToReplace.
{code}
- if (PRIORITY_FAST_FAIL_MAP.equals(priority)
- || PRIORITY_MAP.equals(priority)) {
+ if (PRIORITY_FAST_FAIL_MAP.equals(priority)) {
+ while (toBeReplaced == null && earlierFailedMaps.size() > 0) {
+ TaskAttemptId tId = earlierFailedMaps.removeFirst();
+ if (maps.containsKey(tId)) {
+ toBeReplaced = maps.remove(tId);
+ }
+ }
+ return toBeReplaced;
+ }
+ else if (PRIORITY_MAP.equals(priority)) {
{code}
> MR AM can hang if containers are allocated on a node blacklisted by the AM
> --------------------------------------------------------------------------
>
> Key: MAPREDUCE-3460
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3460
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mr-am, mrv2
> Affects Versions: 0.23.0
> Reporter: Siddharth Seth
> Priority: Blocker
>
> When an AM is assigned a FAILED_MAP (priority = 5) container on a nodemanager
> which it has blacklisted - it tries to
> find a corresponding container request.
> This uses the hostname to find the matching container request - and can end
> up returning any of the ContainerRequests which may have requested a
> container on this node. This container request is cleaned to remove the bad
> node - and then added back to the RM 'ask' list.
> The AM cleans the 'ask' list after each heartbeat - The RM Allocator is still
> aware of the priority=5 container (in 'remoteRequestsTable') - but this never
> gets added back to the 'ask' set - which is what is sent to the RM.
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