Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/21772#discussion_r204276886 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashedRelation.scala --- @@ -770,8 +771,10 @@ private[execution] final class LongToUnsafeRowMap(val mm: TaskMemoryManager, cap val length = readLong().toInt mask = length - 2 array = readLongArray(readBuffer, length) - val pageLength = readLong().toInt - page = readLongArray(readBuffer, pageLength) + val usedWordsNumber = readLong().toInt + // Set cursor because cursor is used in write function. + cursor = usedWordsNumber * 8 + Platform.LONG_ARRAY_OFFSET + page = readLongArray(readBuffer, usedWordsNumber) --- End diff -- ditto. Can you just update `cursor` and revert other unrelated change?
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