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ASF GitHub Bot commented on YARN-11542: --------------------------------------- p-szucs closed pull request #5894: YARN-11542. Fix NegativeArraySizeException in IFile's readRawValue me… URL: https://github.com/apache/hadoop/pull/5894 > NegativeArraySizeException when running MR jobs with large data size > -------------------------------------------------------------------- > > Key: YARN-11542 > URL: https://issues.apache.org/jira/browse/YARN-11542 > Project: Hadoop YARN > Issue Type: Bug > Components: yarn > Reporter: Peter Szucs > Assignee: Peter Szucs > Priority: Major > Labels: pull-request-available > > We are using bit shifting to double the byte array in IFile's > [nextRawValue|https://github.infra.cloudera.com/CDH/hadoop/blob/bef14a39c7616e3b9f437a6fb24fc7a55a676b57/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/IFile.java#L437] > method to store the byte values in it. With large dataset it can easily > happen that we shift the leftmost bit when we are calculating the size of the > array, which can lead to a negative number as the array size, causing the > NegativeArraySizeException. > It would be safer to expand the backing array with a 1.5x factor, and have a > check not to extend Integer's max value during that. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org