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https://issues.apache.org/jira/browse/YARN-11011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17782115#comment-17782115
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ASF GitHub Bot commented on YARN-11011:
---------------------------------------
slfan1989 commented on code in PR #6211:
URL: https://github.com/apache/hadoop/pull/6211#discussion_r1379976006
##########
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/main/java/org/apache/hadoop/yarn/server/router/clientrm/FederationClientInterceptor.java:
##########
@@ -842,13 +842,24 @@ <R> Collection<R> invokeConcurrent(ClientMethod request,
Class<R> clazz)
// Generate parallel Callable tasks
for (SubClusterId subClusterId : subClusterIds) {
callables.add(() -> {
- ApplicationClientProtocol protocol =
getClientRMProxyForSubCluster(subClusterId);
- String methodName = request.getMethodName();
- Class<?>[] types = request.getTypes();
- Object[] params = request.getParams();
- Method method = ApplicationClientProtocol.class.getMethod(methodName,
types);
- Object result = method.invoke(protocol, params);
- return Pair.of(subClusterId, result);
+ try {
+ ApplicationClientProtocol protocol =
getClientRMProxyForSubCluster(subClusterId);
+ String methodName = request.getMethodName();
+ Class<?>[] types = request.getTypes();
+ Object[] params = request.getParams();
+ Method method =
ApplicationClientProtocol.class.getMethod(methodName, types);
+ Object result = method.invoke(protocol, params);
+ return Pair.of(subClusterId, result);
+ } catch (Exception e) {
+ Throwable cause = e.getCause();
+ if (cause != null && cause instanceof InvocationTargetException) {
+ cause = cause.getCause();
+ }
+ String errMsg = (cause.getMessage() != null) ? cause.getMessage() :
"UNKNOWN";
+ return Pair.of(subClusterId, new YarnException(
Review Comment:
I will improve this code.
> Make YARN Router throw Exception to client clearly
> --------------------------------------------------
>
> Key: YARN-11011
> URL: https://issues.apache.org/jira/browse/YARN-11011
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: yarn
> Affects Versions: 3.3.1
> Reporter: Yuan Luo
> Assignee: Shilun Fan
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Attachments: router-error.png
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> When router submits job to yarn, the job is rejected by yarn for some reason.
> Yarn router just throw exception to log and return not enough info to client.
> The router always throws the following non-obvious error to client:
> Exception in thread "main"
> org.apache.hadoop.yarn.server.federation.policies.exceptions.FederationPolicyException:
> No active SubCluster available to submit the request.
> To make it easy for the user to locate the cause of a job submission failure,
> we need to make Router throw the true cause of the error to the client
> clearly.
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