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https://issues.apache.org/jira/browse/HDFS-14546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16942062#comment-16942062
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Ayush Saxena edited comment on HDFS-14546 at 10/1/19 3:27 PM:
--------------------------------------------------------------

Thanx [~Amithsha]
Can you help me what is this :

{code:java}
diff --git 
a/hadoop-hdfs-project/hadoop-hdfs/src/site/resources/images/RackFaultTolerant.jpg
 
b/hadoop-hdfs-project/hadoop-hdfs/src/site/resources/images/RackFaultTolerant.jpg
new file mode 100644
index 00000000000..6631288a6da
Binary files /dev/null and 
b/hadoop-hdfs-project/hadoop-hdfs/src/site/resources/images/RackFaultTolerant.jpg
 differ
{code}

Whitespace warnings needs to be fixed.


was (Author: ayushtkn):
Thanx [~Amithsha]
We should have a link to the new doc, from {{HdfsDesign.md}} under 
BlockPlacementPolicies too.
Whitespace warnings needs to be fixed.

> Document block placement policies
> ---------------------------------
>
>                 Key: HDFS-14546
>                 URL: https://issues.apache.org/jira/browse/HDFS-14546
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Íñigo Goiri
>            Assignee: Amithsha
>            Priority: Major
>              Labels: documentation
>         Attachments: HDFS-14546-01.patch, HDFS-14546-02.patch, 
> HDFS-14546-03.patch, HDFS-14546-04.patch, HDFS-14546-05.patch, 
> HdfsDesign.patch
>
>
> Currently, all the documentation refers to the default block placement policy.
> However, over time there have been new policies:
> * BlockPlacementPolicyRackFaultTolerant (HDFS-7891)
> * BlockPlacementPolicyWithNodeGroup (HDFS-3601)
> * BlockPlacementPolicyWithUpgradeDomain (HDFS-9006)
> We should update the documentation to refer to them explaining their 
> particularities and probably how to setup each one of them.



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