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https://issues.apache.org/jira/browse/HDFS-17794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18040669#comment-18040669
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ASF GitHub Bot commented on HDFS-17794:
---------------------------------------
dlmarion commented on code in PR #8065:
URL: https://github.com/apache/hadoop/pull/8065#discussion_r2560827941
##########
hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml:
##########
@@ -1779,6 +1779,21 @@
</description>
</property>
+<property>
+ <name>dfs.datanode.synconclose</name>
+ <value>false</value>
+ <description>
+ If this configuration is enabled, the datanode will instruct the
+ operating system to sync data block files contents to disk when the
+ blockfile is closed.
+
+ This has the benefit of ensuring that data is written to disk
+ immeditately when a block is closed, avoiding the data being held
Review Comment:
```suggestion
immediately when a block is closed, avoiding the data being held
```
> Document the property dfs.datanode.synconclose
> ----------------------------------------------
>
> Key: HDFS-17794
> URL: https://issues.apache.org/jira/browse/HDFS-17794
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: documentation
> Affects Versions: 3.4.1
> Reporter: Jim Halfpenny
> Assignee: Jim Halfpenny
> Priority: Minor
> Labels: pull-request-available
>
> The hdfs-site.xml property dfs.datanode.synconclose appears in the HDFS code
> but is not documented. The property, it's default value and the behaviour of
> this configuration property should be added to the Hadoop HDFS documentation.
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