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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2019/05/17 12:44:56 UTC

[GitHub] [flink] klion26 commented on a change in pull request #8459: [FLINK-12476] [State TTL] Consider setting a default background cleanup strategy in StateTtlConfig

klion26 commented on a change in pull request #8459: [FLINK-12476] [State TTL] Consider setting a default background cleanup strategy in StateTtlConfig
URL: https://github.com/apache/flink/pull/8459#discussion_r285098205
 
 

 ##########
 File path: flink-state-backends/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/ttl/RocksDbTtlCompactFiltersManager.java
 ##########
 @@ -108,7 +110,16 @@ public void configCompactFilter(
 			@Nonnull StateDescriptor<?, ?> stateDesc,
 			TypeSerializer<?> stateSerializer) {
 		StateTtlConfig ttlConfig = stateDesc.getTtlConfig();
-		if (ttlConfig.isEnabled() && ttlConfig.getCleanupStrategies().inRocksdbCompactFilter()) {
+
+		//if ttl is enable and cleanup in background and user did not specify the cleanup strategy
+		//then build the compact filter cleanup strategy and apply the default value
+		if (ttlConfig.isEnabled() && ttlConfig.isCleanupInBackground() &&
+			ttlConfig.getCleanupStrategies().getRocksdbCompactFilterCleanupStrategy() == null) {
+			ttlConfig.getCleanupStrategies().activate(ROCKSDB_COMPACTION_FILTER,
+				new StateTtlConfig.RocksdbCompactFilterCleanupStrategy(1000L));
+		}
+
+		if (ttlConfig.getCleanupStrategies().inRocksdbCompactFilter()) {
 
 Review comment:
   Maybe we need to add `ttlConfig.isEnabled()` here?

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