StefanRRichter commented on a change in pull request #7568: [FLINK-11417] Make
access to ExecutionGraph single threaded from JobMaster main thread
URL: https://github.com/apache/flink/pull/7568#discussion_r250990420
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/rpc/MainThreadValidatorUtil.java
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@@ -44,4 +51,24 @@ public void exitMainThread() {
assert(endpoint.currentMainThread.compareAndSet(Thread.currentThread(), null)) :
"The RpcEndpoint has concurrent access from " +
endpoint.currentMainThread.get();
}
+
+ /**
+ * Returns true iff the current thread is equals to the provided
expected thread and logs violations.
+ *
+ * @param expected the expected main thread.
+ * @return true iff the current thread is equals to the provided
expected thread.
+ */
+ public static boolean isRunningInExpectedThread(@Nullable Thread
expected) {
+ Thread actual = Thread.currentThread();
+ if (expected != actual) {
+ log.warn("Violation of main thread constraint detected:
expected <{}> but running in <{}>.",
+ expected,
+ actual,
+ new Exception());
Review comment:
Yes, and yes ok.
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