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https://issues.apache.org/jira/browse/KYLIN-4966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17351572#comment-17351572
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ASF GitHub Bot commented on KYLIN-4966:
---------------------------------------
hit-lacus commented on a change in pull request #1636:
URL: https://github.com/apache/kylin/pull/1636#discussion_r639457120
##########
File path:
kylin-spark-project/kylin-spark-engine/src/main/java/org/apache/kylin/engine/spark/job/NSparkBatchOptimizeJobCheckpointBuilder.java
##########
@@ -0,0 +1,88 @@
+/*
+ * 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.kylin.engine.spark.job;
+
+import com.google.common.base.Preconditions;
+import org.apache.kylin.common.KylinConfig;
+import org.apache.kylin.cube.CubeInstance;
+import org.apache.kylin.engine.mr.steps.CubingExecutableUtil;
+import org.apache.kylin.job.constant.ExecutableConstants;
+import org.apache.kylin.job.execution.CheckpointExecutable;
+import org.apache.kylin.metadata.project.ProjectInstance;
+import org.apache.kylin.metadata.project.ProjectManager;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.List;
+import java.util.Locale;
+
+public class NSparkBatchOptimizeJobCheckpointBuilder {
+ protected SimpleDateFormat format = new SimpleDateFormat("z yyyy-MM-dd
HH:mm:ss", Locale.ROOT);
+
+ final protected CubeInstance cube;
+ final protected String submitter;
+
+ public NSparkBatchOptimizeJobCheckpointBuilder(CubeInstance cube, String
submitter) {
+ this.cube = cube;
+ this.submitter = submitter;
+
+ Preconditions.checkNotNull(cube.getFirstSegment(), "Cube " + cube + "
is empty!!!");
+ }
+
+ public CheckpointExecutable build() {
+ KylinConfig kylinConfig = cube.getConfig();
+ List<ProjectInstance> projList =
ProjectManager.getInstance(kylinConfig).findProjects(cube.getType(),
+ cube.getName());
+ if (projList == null || projList.size() == 0) {
+ throw new RuntimeException("Cannot find the project containing the
cube " + cube.getName() + "!!!");
+ } else if (projList.size() >= 2) {
Review comment:
In which case, could `projList.size() >= 2` happen ?
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> Refresh the existing segment according to the new cuboid list in kylin4
> -----------------------------------------------------------------------
>
> Key: KYLIN-4966
> URL: https://issues.apache.org/jira/browse/KYLIN-4966
> Project: Kylin
> Issue Type: New Feature
> Components: Job Engine
> Affects Versions: v4.0.0-beta
> Reporter: Yaqian Zhang
> Assignee: Yaqian Zhang
> Priority: Minor
> Fix For: v4.0.0-GA
>
>
> When the user wants to update the cuboid list of a cube, the existing segment
> needs to be refreshed.
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