pnowojski commented on code in PR #20151:
URL: https://github.com/apache/flink/pull/20151#discussion_r1082600527
##########
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/environment/ExecutionCheckpointingOptions.java:
##########
@@ -280,4 +280,13 @@ public class ExecutionCheckpointingOptions {
.booleanType()
.defaultValue(false)
.withDescription("Flag to enable approximate local
recovery.");
+
+ public static final ConfigOption<Integer>
CHANNEL_STATE_NUMBER_OF_SUBTASKS_SHARE_FILE =
+
ConfigOptions.key("execution.checkpointing.channel-state.number-of-subtasks-share-file")
+ .intType()
+ .defaultValue(5)
+ .withDescription(
+ "Defines the maximum number of subtasks that share
the same channel state file. "
+ + "It can reduce the number of small files
when enable unaligned checkpoint. "
+ + "Each subtask will create a new channel
state file when this is configured to 1.");
Review Comment:
It's only for unaligned checkpoints. There is a possibility we will have
more options, but not very likely. So maybe
`execution.checkpointing.unaligned.max-subtasks-per-channel-state-file`?
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