Skip to content

HDFS-17794 Documentation for dfs.datanode.synconclose #7715

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 2 commits into
base: trunk
Choose a base branch
from
+15 −0
Open

HDFS-17794 Documentation for dfs.datanode.synconclose #7715

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
d2f4b7e
Added documentation for dfs.datanode.synconclose to hdfs-default.xml
Jimvin May 27, 2025
5617e8d
Merge pull request #1 from Jimvin/synconclose-docs-patch
Jimvin May 27, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
15 changes: 15 additions & 0 deletions hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1779,6 +1779,21 @@
</description>
</property>

<property>
<name>dfs.datanode.synconclose</name>
Copy link

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Add dfs.datanode.socket.reuse.keepalive alse ?

<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
in the operating system cache. This can help data loss in the event
of a malfunction such as a power failure.
</description>
</property>

<property>
<name>dfs.client.failover.max.attempts</name>
<value>15</value>
Expand Down