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https://issues.apache.org/jira/browse/TEZ-1618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14148156#comment-14148156
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Jonathan Eagles commented on TEZ-1618:
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+1. Good fix, [~airbots].
> LocalTaskSchedulerService.getTotalResources() and getAvailableResources() can
> get negative if JVM memory is larger than 2GB
> ---------------------------------------------------------------------------------------------------------------------------
>
> Key: TEZ-1618
> URL: https://issues.apache.org/jira/browse/TEZ-1618
> Project: Apache Tez
> Issue Type: Sub-task
> Reporter: Chen He
> Assignee: Chen He
> Attachments: TEZ-1618-2.patch, TEZ-1618-3.patch, TEZ-1618.patch
>
>
> Tez job can get failed because of negative headroom value;
> org.apache.tez.dag.app.dag.impl.VertexImpl - Creating 2 for vertex:
> vertex_1411054289802_0001_1_01 [intermediate_reducer]
> 56389 [InputInitializer [initialmap] #0] INFO
> org.apache.tez.mapreduce.common.MRInputAMSplitGenerator - Input MRInput asking
> for -2 tasks. *strong* Headroom: -1365 *strong* Task Resource: 1024 waves: 1.7
> 56391 [InputInitializer [initialmap] #0] INFO
> org.apache.tez.mapreduce.common.MRInputAMSplitGenerator - Grouping input
> splits
> 56391 [InputInitializer [initialmap] #0] INFO
> org.apache.tez.mapreduce.hadoop.MRInputHelpers - Generating mapreduce api
> input
> splits
> 56400 [AsyncDispatcher event handler] INFO
> org.apache.tez.dag.app.dag.impl.VertexImpl - Directly initializing vertex:
> vertex_1411054289802_0001_1_01 [intermediate_reducer]
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