[GitHub] [flink] klion26 commented on a change in pull request #10305: [FLINK-14892][docs] Add documentation for checkpoint directory layout

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klion26 commented on a change in pull request #10305: [FLINK-14892][docs] Add documentation for checkpoint directory layout
URL: https://github.com/apache/flink/pull/10305#discussion_r350003208
 
 

 ##########
 File path: docs/ops/state/checkpoints.md
 ##########
 @@ -63,6 +63,24 @@ files. The meta data file and data files are stored in the directory that is
 configured via `state.checkpoints.dir` in the configuration files, 
 and also can be specified for per job in the code.
 
+The current checkpoint directory layout which introduced by FLINK-8531 is as follows:
+
+{% highlight yaml %}
+/user-defined-checkpoint-dir
+    |
+    + --shared/
+    + --taskowned/
+    + --chk-00001/
+    + --chk-00002/
+    + --chk-00003/
+    ...
+{% endhighlight %}
+
+The **SHARED** directory is for state that is possibly part of multiple checkpoints, **TASKOWNED** is for state that must never by dropped by the JobManager, and **EXCLUSIVE** is for state that belongs to one checkpoint only. 
 
 Review comment:
   The description order is according to the order of the above checkpoint directory layout.

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