zentol closed pull request #5648: [FLINK-8887][flip-6]
ClusterClient.getJobStatus can throw FencingTokenException
URL: https://github.com/apache/flink/pull/5648
This is a PR merged from a forked repository.
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diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/dispatcher/Dispatcher.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/dispatcher/Dispatcher.java
index 9b2411c66b7..1789758a6f1 100644
---
a/flink-runtime/src/main/java/org/apache/flink/runtime/dispatcher/Dispatcher.java
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/dispatcher/Dispatcher.java
@@ -57,6 +57,7 @@
import org.apache.flink.runtime.rpc.FencedRpcEndpoint;
import org.apache.flink.runtime.rpc.RpcService;
import org.apache.flink.runtime.rpc.RpcUtils;
+import org.apache.flink.runtime.rpc.exceptions.FencingTokenException;
import org.apache.flink.util.ExceptionUtils;
import org.apache.flink.util.FlinkException;
import org.apache.flink.util.Preconditions;
@@ -74,6 +75,7 @@
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
import java.util.stream.Collectors;
/**
@@ -404,7 +406,29 @@ public void start() throws Exception {
final JobManagerRunner jobManagerRunner =
jobManagerRunners.get(jobId);
if (jobManagerRunner != null) {
- return
jobManagerRunner.getJobManagerGateway().requestJobStatus(timeout);
+ CompletableFuture<JobStatus> statusFuture =
jobManagerRunner.getJobManagerGateway().requestJobStatus(timeout);
+ statusFuture.handle((JobStatus status,
Throwable throwable) -> {
+ if (throwable != null) {
+ Throwable error =
ExceptionUtils.stripCompletionException(throwable);
+
+ if (error instanceof
FencingTokenException) {
+ log.warn("It occurs
FencingTokenException may be the job manager runner has no leadership or" +
+ " the job has
finished, so we would try to get it from archived execution graph store.");
+ final JobDetails
jobDetails = archivedExecutionGraphStore.getAvailableJobDetails(jobId);
+
+ if (jobDetails != null)
{
+ return
jobDetails.getStatus();
+ } else {
+ throw new
CompletionException(new FlinkJobNotFoundException(jobId));
+ }
+ }
+
+ }
+
+ return status;
+ });
+
+ return statusFuture;
} else {
final JobDetails jobDetails =
archivedExecutionGraphStore.getAvailableJobDetails(jobId);
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