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shaofengshi pushed a commit to branch engine-flink
in repository https://gitbox.apache.org/repos/asf/kylin.git
The following commit(s) were added to refs/heads/engine-flink by this push:
new 5eac35a KYLIN-3897 Implement IFlinkInput based on Hive
5eac35a is described below
commit 5eac35a3bcc534125ef12c936a5e12f56a889921
Author: yanghua <yanghua1...@gmail.com>
AuthorDate: Wed Mar 20 14:10:49 2019 +0800
KYLIN-3897 Implement IFlinkInput based on Hive
---
source-hive/pom.xml | 4 +
.../apache/kylin/source/hive/HiveFlinkInput.java | 92 ++++++++++++++++++++++
.../org/apache/kylin/source/hive/HiveSource.java | 3 +
3 files changed, 99 insertions(+)
diff --git a/source-hive/pom.xml b/source-hive/pom.xml
index e242f0a..6cc15fa 100644
--- a/source-hive/pom.xml
+++ b/source-hive/pom.xml
@@ -105,6 +105,10 @@
<groupId>org.apache.kylin</groupId>
<artifactId>kylin-engine-spark</artifactId>
</dependency>
+ <dependency>
+ <groupId>org.apache.kylin</groupId>
+ <artifactId>kylin-engine-flink</artifactId>
+ </dependency>
</dependencies>
</project>
diff --git
a/source-hive/src/main/java/org/apache/kylin/source/hive/HiveFlinkInput.java
b/source-hive/src/main/java/org/apache/kylin/source/hive/HiveFlinkInput.java
new file mode 100644
index 0000000..f3dbf73
--- /dev/null
+++ b/source-hive/src/main/java/org/apache/kylin/source/hive/HiveFlinkInput.java
@@ -0,0 +1,92 @@
+/*
+ * 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.source.hive;
+
+import com.google.common.collect.Lists;
+import org.apache.kylin.common.util.StringUtil;
+import org.apache.kylin.engine.flink.IFlinkInput;
+import org.apache.kylin.job.JoinedFlatTable;
+import org.apache.kylin.job.constant.ExecutableConstants;
+import org.apache.kylin.job.execution.AbstractExecutable;
+import org.apache.kylin.job.execution.DefaultChainedExecutable;
+import org.apache.kylin.metadata.model.IJoinedFlatTableDesc;
+import org.apache.kylin.metadata.model.ISegment;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * The implementation of {@link IFlinkInput} based on Hive.
+ */
+public class HiveFlinkInput extends HiveInputBase implements IFlinkInput {
+
+ @SuppressWarnings("unused")
+ private static final Logger logger =
LoggerFactory.getLogger(HiveFlinkInput.class);
+
+ @Override
+ public IFlinkBatchCubingInputSide
getBatchCubingInputSide(IJoinedFlatTableDesc flatDesc) {
+ return new BatchCubingInputSide(flatDesc);
+ }
+
+ @Override
+ public IFlinkBatchMergeInputSide getBatchMergeInputSide(ISegment seg) {
+ return new IFlinkBatchMergeInputSide() {
+ @Override
+ public void addStepPhase1_MergeDictionary(DefaultChainedExecutable
jobFlow) {
+ // doing nothing
+ }
+ };
+ }
+
+ public class BatchCubingInputSide extends BaseBatchCubingInputSide
implements IFlinkBatchCubingInputSide {
+
+ List<String> hiveViewIntermediateTables = Lists.newArrayList();
+
+ public BatchCubingInputSide(IJoinedFlatTableDesc flatDesc) {
+ super(flatDesc);
+ }
+
+ protected void
addStepPhase1_DoMaterializeLookupTable(DefaultChainedExecutable jobFlow) {
+ final String hiveInitStatements =
JoinedFlatTable.generateHiveInitStatements(flatTableDatabase);
+ final String jobWorkingDir = getJobWorkingDir(jobFlow,
hdfsWorkingDir);
+
+ AbstractExecutable task =
createLookupHiveViewMaterializationStep(hiveInitStatements, jobWorkingDir,
+ flatDesc, hiveViewIntermediateTables, jobFlow.getId());
+ if (task != null) {
+ jobFlow.addTask(task);
+ }
+ }
+
+ @Override
+ public void addStepPhase4_Cleanup(DefaultChainedExecutable jobFlow) {
+ final String jobWorkingDir = getJobWorkingDir(jobFlow,
hdfsWorkingDir);
+
+ GarbageCollectionStep step = new GarbageCollectionStep();
+ step.setName(ExecutableConstants.STEP_NAME_HIVE_CLEANUP);
+
step.setIntermediateTables(Collections.singletonList(getIntermediateTableIdentity()));
+
step.setExternalDataPaths(Collections.singletonList(JoinedFlatTable.getTableDir(flatDesc,
jobWorkingDir)));
+
step.setHiveViewIntermediateTableIdentities(StringUtil.join(hiveViewIntermediateTables,
","));
+ jobFlow.addTask(step);
+ }
+
+ }
+
+}
diff --git
a/source-hive/src/main/java/org/apache/kylin/source/hive/HiveSource.java
b/source-hive/src/main/java/org/apache/kylin/source/hive/HiveSource.java
index b536bf0..353cf1d 100644
--- a/source-hive/src/main/java/org/apache/kylin/source/hive/HiveSource.java
+++ b/source-hive/src/main/java/org/apache/kylin/source/hive/HiveSource.java
@@ -21,6 +21,7 @@ package org.apache.kylin.source.hive;
import java.io.IOException;
import org.apache.kylin.common.KylinConfig;
+import org.apache.kylin.engine.flink.IFlinkInput;
import org.apache.kylin.engine.mr.IMRInput;
import org.apache.kylin.engine.spark.ISparkInput;
import org.apache.kylin.metadata.model.IBuildable;
@@ -48,6 +49,8 @@ public class HiveSource implements ISource {
return (I) new HiveMRInput();
} else if (engineInterface == ISparkInput.class) {
return (I) new HiveSparkInput();
+ } else if (engineInterface == IFlinkInput.class) {
+ return (I) new HiveFlinkInput();
} else {
throw new RuntimeException("Cannot adapt to " + engineInterface);
}
