MultithreadMapRunner keeps consuming records even if trheads are not available
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Key: HADOOP-3104
URL: https://issues.apache.org/jira/browse/HADOOP-3104
Project: Hadoop Core
Issue Type: Bug
Affects Versions: 0.16.1
Environment: all
Reporter: Alejandro Abdelnur
Assignee: Alejandro Abdelnur
Priority: Critical
Fix For: 0.16.2
The ExecutorService execute() method does not block when there are not threads
available, it queues up the runnables until there are threads.
The problem is that all key/values are read and kept in memory for the task,
with large datasets this will create a OOM exception.
Have to figure out how to use the execute in blocking fashion.
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