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Posted to issues@tajo.apache.org by "Jihoon Son (JIRA)" <ji...@apache.org> on 2015/07/22 04:47:04 UTC

[jira] [Created] (TAJO-1696) Resource calculator should consider the requested disk resource at the first stage

Jihoon Son created TAJO-1696:
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             Summary: Resource calculator should consider the requested disk resource at the first stage
                 Key: TAJO-1696
                 URL: https://issues.apache.org/jira/browse/TAJO-1696
             Project: Tajo
          Issue Type: Improvement
            Reporter: Jihoon Son
             Fix For: 0.11.0


Resource calculator currently considers only cpu and memory. However, disk is an important resource in the first stage, so should be considered for available resource calculation.

In addition, in the current implementation, a worker sends a heartbeat whenever it finishes processing half of the assigned tasks. So, the problem of ignoring disk resource makes the first heartbeat delayed during the first stage, thereby making the query execution slow.



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