Hyunsik Choi created TAJO-1376:
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Summary: Add black list for unhealthy nodes
Key: TAJO-1376
URL: https://issues.apache.org/jira/browse/TAJO-1376
Project: Tajo
Issue Type: Improvement
Components: resource manager, tajo master
Reporter: Hyunsik Choi
Fix For: 0.11
Unhealthy nodes are usual In large clusters.
There are some unhealthy cases as follows:
* there is no enough storage capacity.
* frequent task errors or failures in certain nodes
* other reasons reported by workers
TajoMaster and ResourceTracker should keep those nodes in the black list, and
than resource allocations of TesourceTracker should consider the black list.
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