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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