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https://issues.apache.org/jira/browse/HDFS-15253?focusedWorklogId=496242&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-496242
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ASF GitHub Bot logged work on HDFS-15253:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 07/Oct/20 00:10
Start Date: 07/Oct/20 00:10
Worklog Time Spent: 10m
Work Description: karthikhw opened a new pull request #2366:
URL: https://github.com/apache/hadoop/pull/2366
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Issue Time Tracking
-------------------
Worklog Id: (was: 496242)
Remaining Estimate: 0h
Time Spent: 10m
> Set default throttle value on dfs.image.transfer.bandwidthPerSec
> ----------------------------------------------------------------
>
> Key: HDFS-15253
> URL: https://issues.apache.org/jira/browse/HDFS-15253
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Reporter: Karthik Palanisamy
> Assignee: Karthik Palanisamy
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The default value dfs.image.transfer.bandwidthPerSec is set to 0 so it can
> use maximum available bandwidth for fsimage transfers during checkpoint. I
> think we should throttle this. Many users were experienced namenode failover
> when transferring large image size along with fsimage replication on
> dfs.namenode.name.dir. eg. >25Gb.
> Thought to set,
> dfs.image.transfer.bandwidthPerSec=52428800. (50 MB/s)
> dfs.namenode.checkpoint.txns=2000000 (Default is 1M, good to avoid frequent
> checkpoint. However, the default checkpoint runs every 6 hours once)
>
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