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Posted to hdfs-issues@hadoop.apache.org by "Lokesh Jain (JIRA)" <ji...@apache.org> on 2019/02/14 16:57:00 UTC

[jira] [Created] (HDDS-1106) Introduce queryMap in PipelineManager

Lokesh Jain created HDDS-1106:
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             Summary: Introduce queryMap in PipelineManager
                 Key: HDDS-1106
                 URL: https://issues.apache.org/jira/browse/HDDS-1106
             Project: Hadoop Distributed Data Store
          Issue Type: Bug
            Reporter: Lokesh Jain
            Assignee: Lokesh Jain
             Fix For: 0.4.0


In Genesis benchmark for block allocation it was found that BlockManager#allocateBlock call was very slow for higher number of pipelines. This happens because allocateBlock call gets list of pipelines with a particular replication type, replication factor and state. This list is calculated by traversing the entries of a map. This Jira aims to optimize the call by introducing query map in Pipeline Manager.

The pipeline manager would keep a maintain a list of pipelines for every query type i.e. for every replication type, replication factor.



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