Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/19460#discussion_r143564830 --- Diff: common/unsafe/src/main/java/org/apache/spark/unsafe/array/ByteArrayMethods.java --- @@ -40,6 +40,15 @@ public static int roundNumberOfBytesToNearestWord(int numBytes) { } } + // Some JVMs can't allocate arrays of length Integer.MAX_VALUE; actual max is somewhat smaller. + // Be conservative and lower the cap a little. + public static int MAX_ARRAY_LENGTH = Integer.MAX_VALUE - 8; --- End diff -- `- 15`
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