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[ https://issues.apache.org/jira/browse/HDFS-81?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

dhruba borthakur resolved HDFS-81.
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Resolution: Won't Fix

This problem occurs only in old releases and is not present in trunk.
Impact in NameNode scalability because heartbeat processing acquires the global lock
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Key: HDFS-81
URL: https://issues.apache.org/jira/browse/HDFS-81
Project: Hadoop HDFS
Issue Type: Bug
Reporter: dhruba borthakur

The heartbeat processing code recently got rearranged via HADOOP-3254. This caused the NameNode heartbeat processing code to acquire the FSNamesystem global lock for every heartbeat processing. This could impact scalability of the namenode.
This problem is present in 0.17.x and 0.18.x release only. It is not present in 0.16.x and on trunk.
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postedJun 23, '10 at 5:33p
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