zentol commented on code in PR #21201:
URL: https://github.com/apache/flink/pull/21201#discussion_r1012657729
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flink-runtime/src/main/java/org/apache/flink/runtime/state/metainfo/StateMetaInfoSnapshotReadersWriters.java:
##########
@@ -123,10 +116,10 @@ private static StateMetaInfoReader
getLegacyKeyedStateMetaInfoReader(int readVer
switch (readVersion) {
case 1:
case 2:
- return
LegacyStateMetaInfoReaders.KeyedBackendStateMetaInfoReaderV1V2.INSTANCE;
Review Comment:
same as below
##########
pom.xml:
##########
@@ -2125,6 +2125,7 @@ under the License.
<exclude>@org.apache.flink.annotation.PublicEvolving</exclude>
<exclude>@org.apache.flink.annotation.Internal</exclude>
<!-- MARKER:
start exclusions; these will be wiped by
tools/releasing/update_japicmp_configuration.sh -->
+
<exclude>org.apache.flink.streaming.api.datastream.CoGroupedStreams$UnionSerializerConfigSnapshot</exclude>
Review Comment:
Could you add a comment for why this is in here?
##########
flink-core/src/main/java/org/apache/flink/api/common/typeutils/TypeSerializerSerializationUtil.java:
##########
@@ -36,8 +32,6 @@
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InvalidClassException;
-import java.util.ArrayList;
-import java.util.List;
Review Comment:
Based on the javadocs this entire class should no longer be necessary.
##########
flink-runtime/src/main/java/org/apache/flink/runtime/state/metainfo/StateMetaInfoSnapshotReadersWriters.java:
##########
@@ -139,10 +132,10 @@ private static StateMetaInfoReader
getLegacyKeyedStateMetaInfoReader(int readVer
private static StateMetaInfoReader
getLegacyOperatorStateMetaInfoReader(int readVersion) {
Review Comment:
may as well drop this method, no? It _always_ throws an exception.
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