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https://issues.apache.org/jira/browse/HDFS-15723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17252356#comment-17252356
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Ayush Saxena commented on HDFS-15723:
-------------------------------------
Thanx [~hexiaoqiao] for the patch. Changes Looks good, Plans extending a test?
> RBF: invokeConcurrent may run unexpected when enable standby read
> -----------------------------------------------------------------
>
> Key: HDFS-15723
> URL: https://issues.apache.org/jira/browse/HDFS-15723
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: rbf
> Reporter: Xiaoqiao He
> Assignee: Xiaoqiao He
> Priority: Major
> Attachments: HDFS-15723.001.patch
>
>
> My colleague report that the following code segment has wrong parameter
> passed when create RemoteLocation instance at
> RouterRpcClient#invokeConcurrent (Collection<T>, RemoteMethod, boolean, long,
> Class<R>).
> {code:java}
> if (standby) {
> // Call the objectGetter to all NNs (including standby)
> for (final FederationNamenodeContext nn : namenodes) {
> String nnId = nn.getNamenodeId();
> final List<FederationNamenodeContext> nnList =
> Collections.singletonList(nn);
> T nnLocation = location;
> if (location instanceof RemoteLocation) {
> nnLocation = (T)new RemoteLocation(nsId, nnId,
> location.getDest()); <-- wrong parameter passed.
> }
> orderedLocations.add(nnLocation);
> callables.add(
> () -> {
> transferThreadLocalContext(originCall, originContext);
> return invokeMethod(ugi, nnList, proto, m, paramList);
> });
> }
> }
> {code}
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