Do not attempt to restart non-restartable jobs

Closes gh-3830

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/batch/JobLauncherCommandLineRunner.java

@@ -144,7 +144,7 @@ public class JobLauncherCommandLineRunner implements CommandLineRunner,
 					parameters = incrementer.getNext(new JobParameters());
 				}
 			}
-			else if (isStoppedOrFailed(previousExecution)) {
+			else if (isStoppedOrFailed(previousExecution) && job.isRestartable()) {
 				// Retry a failed or stopped execution
 				parameters = previousExecution.getJobParameters();
 				// Non-identifying additional parameters can be added to a retry

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/batch/JobLauncherCommandLineRunnerTests.java

@@ -16,6 +16,8 @@
 
 package org.springframework.boot.autoconfigure.batch;
 
+import static org.junit.Assert.assertEquals;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.springframework.batch.core.Job;
@@ -43,8 +45,6 @@ import org.springframework.context.annotation.Configuration;
 import org.springframework.core.task.SyncTaskExecutor;
 import org.springframework.transaction.PlatformTransactionManager;
 
-import static org.junit.Assert.assertEquals;
-
 /**
  * Tests for {@link JobLauncherCommandLineRunner}.
  *
@@ -124,6 +124,24 @@ public class JobLauncherCommandLineRunnerTests {
 		assertEquals(1, this.jobExplorer.getJobInstances("job", 0, 100).size());
 	}
 
+	@Test
+	public void retryFailedExecutionOnNonRestartableJob() throws Exception {
+		this.job = this.jobs.get("job").preventRestart()
+				.start(this.steps.get("step").tasklet(new Tasklet() {
+					@Override
+					public RepeatStatus execute(StepContribution contribution,
+							ChunkContext chunkContext) throws Exception {
+						throw new RuntimeException("Planned");
+					}
+				}).build()).incrementer(new RunIdIncrementer()).build();
+		this.runner.execute(this.job, new JobParameters());
+		this.runner.execute(this.job, new JobParameters());
+		/* A failed job that is not restartable does not re-use the job params of
+		 * the last execution, but creates a new job instance when running it again.
+		 */
+		assertEquals(2, this.jobExplorer.getJobInstances("job", 0, 100).size());
+	}
+
 	@Test
 	public void retryFailedExecutionWithNonIdentifyingParameters() throws Exception {
 		this.job = this.jobs.get("job")