turcsanyip commented on a change in pull request #4839: URL: https://github.com/apache/nifi/pull/4839#discussion_r582795444
########## File path: nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/main/java/org/apache/nifi/controller/status/history/EmbeddedQuestDbRolloverHandler.java ########## @@ -0,0 +1,121 @@ +/* + * 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.nifi.controller.status.history; + +import io.questdb.cairo.sql.Record; +import io.questdb.cairo.sql.RecordCursor; +import io.questdb.cairo.sql.RecordCursorFactory; +import io.questdb.griffin.SqlCompiler; +import io.questdb.griffin.SqlExecutionContext; +import org.apache.commons.lang3.time.FastDateFormat; +import org.apache.nifi.controller.status.history.questdb.QuestDbContext; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.util.ArrayList; +import java.util.Collection; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import java.util.concurrent.TimeUnit; + +/** + * QuestDB does not provide the possibility for deleting individual lines. Instead there is the option to drop older + * partitions. In order to clean up older status information, the partitions are outside of the scope of data we intend + * to keep will be deleted. + */ +public class EmbeddedQuestDbRolloverHandler implements Runnable { Review comment: I see. Thanks for the explanation. That's fine with me. ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected]
