Github user jackylk commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/2646#discussion_r212350574
--- Diff:
store/sdk/src/test/java/org/apache/carbondata/sdk/file/ConcurrentSdkWriterTest.java
---
@@ -0,0 +1,102 @@
+/*
+ * 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.carbondata.sdk.file;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.carbondata.core.metadata.datatype.DataTypes;
+
+import org.apache.commons.io.FileUtils;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * multi-thread Test suite for {@link CSVCarbonWriter}
+ */
+public class ConcurrentSdkWriterTest {
+
+ @Test public void testWriteFiles() throws IOException {
+ String path = "./testWriteFiles";
+ FileUtils.deleteDirectory(new File(path));
+
+ Field[] fields = new Field[2];
+ fields[0] = new Field("name", DataTypes.STRING);
+ fields[1] = new Field("age", DataTypes.INT);
+
+ int poolSize = 6;
+ ExecutorService executorService =
Executors.newFixedThreadPool(poolSize);
+ try {
+ CarbonWriterBuilder builder =
+
CarbonWriter.builder().outputPath(path).uniqueIdentifier(555).taskNo(123);
+ CarbonWriter writer = builder.buildWriterForCSVInput(new
Schema(fields));
+ // write in multi-thread
+ for (int i = 0; i < poolSize; i++) {
+ executorService.submit(new writeLogic(writer));
+ }
+ executorService.shutdown();
+ executorService.awaitTermination(2, TimeUnit.HOURS);
+ writer.close();
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+
+ // read the files and verify the count
+ CarbonReader reader;
+ try {
+ reader =
+ CarbonReader.builder(path, "_temp").projection(new String[] {
"name", "age" }).build();
+ int i = 0;
+ while (reader.hasNext()) {
+ Object[] row = (Object[]) reader.readNextRow();
+ i++;
+ }
+ // count should be 60 records
+ Assert.assertEquals(i, 60);
+ reader.close();
+ } catch (InterruptedException e) {
+ e.printStackTrace();
+ }
+
+ FileUtils.deleteDirectory(new File(path));
+ }
+
+ class writeLogic implements Runnable {
+ CarbonWriter writer;
+
+ writeLogic(CarbonWriter writer) {
+ this.writer = writer;
+ }
+
+ @Override public void run() {
+
+ try {
+ for (int i = 0; i < 10; i++) {
+ writer.write(new String[] { "robot" + (i % 10),
String.valueOf(i),
+ String.valueOf((double) i / 2) });
+ }
+ } catch (IOException e) {
+ e.printStackTrace();
--- End diff --
should fail the test
---
