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[ https://issues.apache.org/jira/browse/HADOOP-5784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12707966#action_12707966 ]

Steve Loughran commented on HADOOP-5784:
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is the goal here to detect failures of data nodes, or to have an up to date track of which task trackers have capacity?


The length of the heartbeat cycle should be configurable.
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Key: HADOOP-5784
URL: https://issues.apache.org/jira/browse/HADOOP-5784
Project: Hadoop Core
Issue Type: Improvement
Components: mapred
Reporter: Owen O'Malley

Currently, the hearbeat cycle is set to (# nodes / 100) in seconds. This can be too long for clusters that need to run low latency jobs. We should make the number of heartbeats that should arrive a second configurable.
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postedMay 8, '09 at 7:12a
activeJun 2, '09 at 6:54a
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