Roman Leventov created HADOOP-15985: ---------------------------------------
Summary: LightWeightGSet.computeCapacity() doesn't correctly account for CompressedOops Key: HADOOP-15985 URL: https://issues.apache.org/jira/browse/HADOOP-15985 Project: Hadoop Common Issue Type: Improvement Reporter: Roman Leventov In this line: [https://github.com/apache/hadoop/blob/a55d6bba71c81c1c4e9d8cd11f55c78f10a548b0/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/LightWeightGSet.java#L391], instead of checking if the platform is 32- or 64-bit, it should check if Unsafe.ARRAY_OBJECT_INDEX_SCALE is 4 or 8. The result is that on 64-bit platforms, when Compressed Oops are on, LightWeightGSet is two times denser than it is configured to be. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-dev-h...@hadoop.apache.org