[jira] [Created] (TEZ-645) Re-use ID instances in the AM, intern vertex names etc where possible

["Siddharth Seth (JIRA)" <ji...@apache.org>]

Siddharth Seth created TEZ-645:
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             Summary: Re-use ID instances in the AM, intern vertex names etc where possible
                 Key: TEZ-645
                 URL: https://issues.apache.org/jira/browse/TEZ-645
             Project: Apache Tez
          Issue Type: Improvement
            Reporter: Siddharth Seth
            Assignee: Siddharth Seth


The IDs (specifically TaskID can take a fair amount of memory on the AM). These instances should be re-used.

Similarly vertex names, and other strings can be interned. Not planning on touching Counter strings as part of this - I believe those are already interned.



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