tillrohrmann commented on a change in pull request #11408:
[FLINK-15989][FLINK-16225] Improve direct and metaspace out-of-memory error
handling
URL: https://github.com/apache/flink/pull/11408#discussion_r393771271
##########
File path: flink-core/src/main/java/org/apache/flink/util/ExceptionUtils.java
##########
@@ -48,6 +49,27 @@
/** The stringified representation of a null exception reference. */
public static final String STRINGIFIED_NULL_EXCEPTION = "(null)";
+ public static final String TM_DIRECT_OOM_ERROR_MESSAGE = String.format(
+ "The direct out-of-memory error has occurred. This can
mean two things: either job(s) require(s) " +
+ "a larger size of JVM direct memory or there is
a direct memory leak. The direct memory can be " +
+ "allocated by user code or some of its
dependencies. In this case '%s' configuration option should be " +
+ "increased. Flink framework and its
dependencies also consume the direct memory, mostly for network " +
+ "communication. The most of network memory is
managed by Flink and should not result in out-of-memory " +
+ "error. In certain special cases, in particular
for jobs with high parallelism, the framework may " +
+ "require more direct memory which is not
managed by Flink. In this case '%s' configuration option " +
+ "should be increased. If the error persists
then there is probably a direct memory leak which has to " +
+ "be investigated and fixed. The task executor
has to be shutdown...",
+ TaskManagerOptions.TASK_OFF_HEAP_MEMORY.key(),
+ TaskManagerOptions.FRAMEWORK_OFF_HEAP_MEMORY.key());
+
+ public static final String TM_METASPACE_OOM_ERROR_MESSAGE =
String.format(
+ "The metaspace out-of-memory error has occurred. This can mean
two things: either job requires " +
Review comment:
```suggestion
"The metaspace out-of-memory error has occurred. This can mean
two things: either the job requires " +
```
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