azagrebin opened a new pull request #11408: [FLINK-15989][FLINK-16225] Improve direct and metaspace out-of-memory error handling URL: https://github.com/apache/flink/pull/11408 The direct and Metaspace OOM error messages are quite confusing for users. This PR suggests to improve them for most cases in fatal error handler of TM and direct memory segment allocation. The added messages explain the possible error reasons and ways to resolve them. In case of Metaspace OOM error, we try a graceful TM shutdown to notify JM because it is not expected to require class loading for that and cause further failures.
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