[SPARK-31923][Core]Ignore internal accumulators that use unrecognized types rather than crashing (branch-2.4)#28758
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zsxwing wants to merge 2 commits intoapache:branch-2.4from
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[SPARK-31923][Core]Ignore internal accumulators that use unrecognized types rather than crashing (branch-2.4)#28758zsxwing wants to merge 2 commits intoapache:branch-2.4from
zsxwing wants to merge 2 commits intoapache:branch-2.4from
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…d types rather than crashing Ignore internal accumulators that use unrecognized types rather than crashing so that an event log containing such accumulators can still be converted to JSON and logged. A user may use internal accumulators by adding the `internal.metrics.` prefix to the accumulator name to hide sensitive information from UI (Accumulators except internal ones will be shown in Spark UI). However, `org.apache.spark.util.JsonProtocol.accumValueToJson` assumes an internal accumulator has only 3 possible types: `int`, `long`, and `java.util.List[(BlockId, BlockStatus)]`. When an internal accumulator uses an unexpected type, it will crash. An event log that contains such accumulator will be dropped because it cannot be converted to JSON, and it will cause weird UI issue when rendering in Spark History Server. For example, if `SparkListenerTaskEnd` is dropped because of this issue, the user will see the task is still running even if it was finished. It's better to make `accumValueToJson` more robust because it's up to the user to pick up the accumulator name. No The new unit tests. Closes apache#28744 from zsxwing/fix-internal-accum. Authored-by: Shixiong Zhu <zsxwing@gmail.com> Signed-off-by: Shixiong Zhu <zsxwing@gmail.com>
zsxwing
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Jun 8, 2020
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| test("SPARK-30936: forwards compatibility - ignore unknown fields") { |
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These two tests are not in branch-2.4, which causes the conflicts.
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LGTM. assuming tests pass. |
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Test build #123648 has finished for PR 28758 at commit
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Jun 8, 2020
…d types rather than crashing (branch-2.4) ### What changes were proposed in this pull request? Backport #28744 to branch-2.4. ### Why are the changes needed? Low risky fix for branch-2.4. ### Does this PR introduce _any_ user-facing change? No. ### How was this patch tested? New unit tests. Closes #28758 from zsxwing/SPARK-31923-2.4. Authored-by: Shixiong Zhu <zsxwing@gmail.com> Signed-off-by: Shixiong Zhu <zsxwing@gmail.com>
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What changes were proposed in this pull request?
Backport #28744 to branch-2.4.
Why are the changes needed?
Low risky fix for branch-2.4.
Does this PR introduce any user-facing change?
No.
How was this patch tested?
New unit tests.