Myasuka commented on a change in pull request #19106:
URL: https://github.com/apache/flink/pull/19106#discussion_r827793957
##########
File path:
flink-state-backends/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBConfigurableOptions.java
##########
@@ -255,6 +255,15 @@
"If true, RocksDB will use block-based filter
instead of full filter, this only take effect when bloom filter is used. "
+ "The default value is 'false'.");
+ public static final ConfigOption<Double>
RESTORE_OVERLAP_FRACTION_THRESHOLD =
+ key("state.backend.rocksdb.restore-overlap-fraction-threshold")
+ .doubleType()
+ .defaultValue(0.0)
Review comment:
In this PR, we should still left this value as `0.75` as before.
##########
File path:
flink-state-backends/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBIncrementalCheckpointUtils.java
##########
@@ -33,39 +33,30 @@
import java.util.Collection;
import java.util.Comparator;
import java.util.List;
-import java.util.function.BiFunction;
/** Utils for RocksDB Incremental Checkpoint. */
public class RocksDBIncrementalCheckpointUtils {
-
- /**
- * The threshold of the overlap fraction of the handle's key-group range
with target key-group
- * range to be an initial handle.
- */
- private static final double OVERLAP_FRACTION_THRESHOLD = 0.75;
-
/**
* Evaluates state handle's "score" regarding to the target range when
choosing the best state
- * handle to init the initial db for recovery, if the overlap fraction is
less than {@link
- * #OVERLAP_FRACTION_THRESHOLD}, then just return {@code Score.MIN} to
mean the handle has no
- * chance to be the initial handle.
+ * handle to init the initial db for recovery.
Review comment:
I think the description of `Score` should still stay here.
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