teamconfx opened a new pull request, #6093: URL: https://github.com/apache/hadoop/pull/6093
### Description of PR A large `mapreduce.job.reduces` can cause overflow while computing the byte buffer in `org.apache.hadoop.mapred.SpillRecord#SpillRecord(int)`, since the byte buffer size equals to `mapreduce.job.reduces` * MapTask.MAP_OUTPUT_INDEX_RECORD_LENGTH To reproduce: 1. set `mapreduce.job.reduces` to 509103844 2. run `mvn surefire:test -Dtest=org.apache.hadoop.mapred.TestMapTask#testShufflePermissions` This PR provides a fix by checking the computed buffer size is positive. ### How was this patch tested? Unit test ### For code changes: - [x] Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')? - [ ] Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation? - [ ] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0? - [ ] If applicable, have you updated the LICENSE, LICENSE-binary, NOTICE-binary files? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
