[GitHub] [flink] 1996fanrui commented on a diff in pull request #20151: [FLINK-26803][checkpoint] Merging channel state files

[GitBox <gi...@apache.org>]

1996fanrui commented on code in PR #20151:
URL: https://github.com/apache/flink/pull/20151#discussion_r1048276628


##########
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/environment/ExecutionCheckpointingOptions.java:
##########
@@ -252,4 +252,13 @@ public class ExecutionCheckpointingOptions {
                                                     "{{.Site.BaseURL}}{{.Site.LanguagePrefix}}/docs/dev/datastream/fault-tolerance/checkpointing/#checkpointing-with-parts-of-the-graph-finished-beta",
                                                     "the important considerations"))
                                     .build());
+
+    public static final ConfigOption<Integer> CHANNEL_STATE_NUMBER_OF_TASKS_SHARE_FILE =
+            ConfigOptions.key("execution.checkpointing.channel-state.number-of-tasks-share-file")
+                    .intType()
+                    .defaultValue(5)
+                    .withDescription(
+                            "Defines the maximum number of tasks that share the same channel state file. "
+                                    + "It can reduce the number of small files when enable unaligned checkpoint. "
+                                    + "Each task will create a new channel state file when this is configured to 1.");

Review Comment:
   Sorry, I just changed the description, I will change the config key later.



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