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https://issues.apache.org/jira/browse/HDDS-1138?focusedWorklogId=210612&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-210612
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ASF GitHub Bot logged work on HDDS-1138:
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Author: ASF GitHub Bot
Created on: 09/Mar/19 21:59
Start Date: 09/Mar/19 21:59
Worklog Time Spent: 10m
Work Description: xiaoyuyao commented on pull request #585: HDDS-1138.
Ozone Client should avoid talking to SCM directly
URL: https://github.com/apache/hadoop/pull/585
This PR is build based on @mukul1987 's initial patch to optimize write path
only.
The difference are
* persist pipeline info into OM keylocation metadata
* support both read and write without client talking to scm
* There are limitations in this PR when the pipeline changes at SCM side. I
will send additional code changes to support refresh pipeline info for read.
(Basic idea documented in the 2nd commits).
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Issue Time Tracking
-------------------
Worklog Id: (was: 210612)
Time Spent: 10m
Remaining Estimate: 0h
> OzoneManager should return the pipeline info of the allocated block along
> with block info
> -----------------------------------------------------------------------------------------
>
> Key: HDDS-1138
> URL: https://issues.apache.org/jira/browse/HDDS-1138
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Client, Ozone Manager
> Affects Versions: 0.4.0
> Reporter: Mukul Kumar Singh
> Assignee: Mukul Kumar Singh
> Priority: Major
> Labels: pull-request-available
> Attachments: HDDS-1138.001.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Currently, while a block is allocated from OM, the request is forwarded to
> SCM. However, even though the pipeline information is present with the OM for
> block allocation, this information is passed through to the client.
> This optimization will help in reducing the number of hops for the client by
> reducing 1 RPC round trip for each block allocated.
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