Zakelly commented on code in PR #26393: URL: https://github.com/apache/flink/pull/26393#discussion_r2030677692
########## flink-libraries/flink-state-processing-api/src/main/java/org/apache/flink/state/table/SavepointMetadataTableFunction.java: ########## @@ -0,0 +1,72 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.flink.state.table; + +import org.apache.flink.annotation.Internal; +import org.apache.flink.runtime.checkpoint.OperatorState; +import org.apache.flink.runtime.checkpoint.metadata.CheckpointMetadata; +import org.apache.flink.state.api.runtime.SavepointLoader; +import org.apache.flink.table.annotation.DataTypeHint; +import org.apache.flink.table.annotation.FunctionHint; +import org.apache.flink.table.functions.SpecializedFunction; +import org.apache.flink.table.functions.TableFunction; +import org.apache.flink.types.Row; + +@Internal +@FunctionHint( + output = + @DataTypeHint( + "ROW<checkpoint-id BIGINT NOT NULL, " + + "operator-name STRING, " + + "operator-uid STRING, operator-uid-hash STRING NOT NULL, " + + "operator-parallelism INT NOT NULL, " + + "operator-max-parallelism INT NOT NULL, " + + "operator-subtask-state-count INT NOT NULL, " + + "operator-coordinator-state-size-in-bytes BIGINT NOT NULL, " + + "operator-total-size-in-bytes BIGINT NOT NULL>")) +public class SavepointMetadataTableFunction extends TableFunction<Row> { + public SavepointMetadataTableFunction(SpecializedFunction.SpecializedContext context) {} + + public void eval(String savepointPath) { + try { + CheckpointMetadata checkpointMetadata = + SavepointLoader.loadSavepointMetadata(savepointPath); + + for (OperatorState operatorState : checkpointMetadata.getOperatorStates()) { + Row row = Row.withNames(); + row.setField("checkpoint-id", checkpointMetadata.getCheckpointId()); + row.setField("operator-name", operatorState.getOperatorName().orElse(null)); + row.setField("operator-uid", operatorState.getOperatorUid().orElse(null)); + row.setField("operator-uid-hash", operatorState.getOperatorID().toHexString()); + row.setField("operator-parallelism", operatorState.getParallelism()); + row.setField("operator-max-parallelism", operatorState.getMaxParallelism()); + row.setField("operator-subtask-state-count", operatorState.getStates().size()); Review Comment: Thus I suggest adding a more detailed description for `operator-subtask-state-count` in the doc. It represents the state partition count divided by the operator's parallelism and might be 0 if the state is not partitioned. That's my understanding, correct me if I'm wrong. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
