[jira] [Updated] (HDFS-11313) Segmented Block Reports

2017-12-04 Thread Konstantin Shvachko (JIRA)

 [ 
https://issues.apache.org/jira/browse/HDFS-11313?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Konstantin Shvachko updated HDFS-11313:
---
Target Version/s:   (was: 2.7.5)

> Segmented Block Reports
> ---
>
> Key: HDFS-11313
> URL: https://issues.apache.org/jira/browse/HDFS-11313
> Project: Hadoop HDFS
>  Issue Type: Bug
>  Components: datanode, namenode
>Affects Versions: 2.6.2
>Reporter: Konstantin Shvachko
>Assignee: Vinitha Reddy Gankidi
> Attachments: SegmentedBlockReports.pdf
>
>
> Block reports from a single DataNode can be currently split into multiple 
> RPCs each reporting a single DataNode storage (disk). The reports are still 
> large since disks are getting bigger. Splitting blockReport RPCs into 
> multiple smaller calls would improve NameNode performance and overall HDFS 
> stability.
> This was discussed in multiple jiras. Here the approach is to let NameNode 
> divide blockID space into segments and then ask DataNodes to report replicas 
> in a particular range of IDs.



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[jira] [Updated] (HDFS-11313) Segmented Block Reports

2017-04-12 Thread Vinitha Reddy Gankidi (JIRA)

 [ 
https://issues.apache.org/jira/browse/HDFS-11313?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Vinitha Reddy Gankidi updated HDFS-11313:
-
Attachment: SegmentedBlockReports.pdf

> Segmented Block Reports
> ---
>
> Key: HDFS-11313
> URL: https://issues.apache.org/jira/browse/HDFS-11313
> Project: Hadoop HDFS
>  Issue Type: Bug
>  Components: datanode, namenode
>Affects Versions: 2.6.2
>Reporter: Konstantin Shvachko
>Assignee: Vinitha Reddy Gankidi
> Attachments: SegmentedBlockReports.pdf
>
>
> Block reports from a single DataNode can be currently split into multiple 
> RPCs each reporting a single DataNode storage (disk). The reports are still 
> large since disks are getting bigger. Splitting blockReport RPCs into 
> multiple smaller calls would improve NameNode performance and overall HDFS 
> stability.
> This was discussed in multiple jiras. Here the approach is to let NameNode 
> divide blockID space into segments and then ask DataNodes to report replicas 
> in a particular range of IDs.



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