added check before setting checkpoint directory

Author: Nitish1814

spark/client/src/main/java/zingg/spark/client/SparkClient.java

@@ -1,5 +1,6 @@
 package zingg.spark.client;
 
+import org.apache.spark.SparkContext;
 import org.apache.spark.api.java.JavaSparkContext;
 import org.apache.spark.sql.Column;
 import org.apache.spark.sql.Dataset;
@@ -79,12 +80,18 @@ public SparkSession getSession() {
 			SparkSession s = SparkSession
                     .builder()
                     .appName("Zingg")
-                    .getOrCreate();	
-			JavaSparkContext ctx = JavaSparkContext.fromSparkContext(s.sparkContext());
+                    .getOrCreate();
+			SparkContext sparkContext = s.sparkContext();
+			if (sparkContext.getCheckpointDir().isEmpty()) {
+				sparkContext.setCheckpointDir("/tmp/checkpoint");
+			}
+			JavaSparkContext ctx = JavaSparkContext.fromSparkContext(sparkContext);
 					JavaSparkContext.jarOfClass(IZingg.class);
 					LOG.debug("Context " + ctx.toString());
 					//initHashFns();
-			ctx.setCheckpointDir("/tmp/checkpoint");
+			if (!ctx.getCheckpointDir().isPresent()) {
+				ctx.setCheckpointDir(String.valueOf(sparkContext.getCheckpointDir()));
+			}
 			setSession(s);
 			return s;
 		}

spark/core/src/test/java/zingg/spark/core/executor/TestSparkExecutorsCompound.java

@@ -4,25 +4,26 @@
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
-import org.apache.spark.api.java.JavaSparkContext;
 import org.apache.spark.sql.Column;
 import org.apache.spark.sql.Dataset;
 import org.apache.spark.sql.Row;
 import org.apache.spark.sql.SparkSession;
 import org.apache.spark.sql.types.DataType;
 
-import zingg.common.client.IZingg;
+import org.junit.jupiter.api.extension.ExtendWith;
 import zingg.common.client.ZinggClientException;
 import zingg.common.client.util.DFObjectUtil;
 import zingg.common.client.util.IWithSession;
 import zingg.common.client.util.WithSession;
 import zingg.common.core.executor.TestExecutorsCompound;
 import zingg.common.core.executor.TrainMatcher;
 import zingg.spark.client.util.SparkDFObjectUtil;
+import zingg.spark.core.TestSparkBase;
 import zingg.spark.core.context.ZinggSparkContext;
 import zingg.spark.core.executor.labeller.ProgrammaticSparkLabeller;
 import zingg.spark.core.executor.validate.SparkTrainMatchValidator;
 
+@ExtendWith(TestSparkBase.class)
 public class TestSparkExecutorsCompound extends TestExecutorsCompound<SparkSession,Dataset<Row>,Row,Column,DataType> {
 	protected static final String CONFIG_FILE = "zingg/spark/core/executor/configSparkIntTest.json";
 	protected static final String TEST_DATA_FILE = "zingg/spark/core/executor/test.csv";
@@ -31,22 +32,11 @@ public class TestSparkExecutorsCompound extends TestExecutorsCompound<SparkSessi
 
 	protected ZinggSparkContext ctx;
 
-	public TestSparkExecutorsCompound() throws IOException, ZinggClientException {	
-		SparkSession spark = SparkSession
-				.builder()
-				.master("local[*]")
-				.appName("Zingg" + "Junit")
-				.getOrCreate();
-		
-		JavaSparkContext ctx1 = new JavaSparkContext(spark.sparkContext());
-    	JavaSparkContext.jarOfClass(IZingg.class);    
-		ctx1.setCheckpointDir("/tmp/checkpoint");
-
+	public TestSparkExecutorsCompound(SparkSession sparkSession) throws IOException, ZinggClientException {
 		this.ctx = new ZinggSparkContext();
-		this.ctx.setSession(spark);
+		this.ctx.setSession(sparkSession);
 		this.ctx.setUtils();
-		init(spark);
-		//setupArgs();
+		init(sparkSession);
 	}
 
 	@Override

spark/core/src/test/java/zingg/spark/core/session/SparkSessionProvider.java

@@ -2,6 +2,7 @@
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.apache.spark.SparkContext;
 import org.apache.spark.api.java.JavaSparkContext;
 import org.apache.spark.sql.SparkSession;
 import zingg.common.client.Arguments;
@@ -28,9 +29,15 @@ private void initializeSession() {
                         .appName("ZinggJunit")
                         .config("spark.debug.maxToStringFields", 100)
                         .getOrCreate();
-                javaSparkContext = new JavaSparkContext(sparkSession.sparkContext());
+                SparkContext sparkContext = sparkSession.sparkContext();
+                if (sparkContext.getCheckpointDir().isEmpty()) {
+                    sparkContext.setCheckpointDir("/tmp/checkpoint");
+                }
+                javaSparkContext = new JavaSparkContext(sparkContext);
                 JavaSparkContext.jarOfClass(IZingg.class);
-                javaSparkContext.setCheckpointDir("/tmp/checkpoint");
+                if (!javaSparkContext.getCheckpointDir().isPresent()) {
+                    javaSparkContext.setCheckpointDir(String.valueOf(sparkContext.getCheckpointDir()));
+                }
                 args = new Arguments();
                 zinggSparkContext = new ZinggSparkContext();
                 zinggSparkContext.init(sparkSession);