fix applicationId NullPointException

WTZ468071157 · WTZ468071157 · commit 75516ad82477 · 2020-04-02T16:14:59.000+08:00
diff --git a/launcher/src/main/java/com/dtstack/flink/sql/launcher/ClusterClientFactory.java b/launcher/src/main/java/com/dtstack/flink/sql/launcher/ClusterClientFactory.java
@@ -157,7 +157,7 @@ private static ApplicationId getYarnClusterApplicationId(YarnClient yarnClient)
 
         }
 
-        if (StringUtils.isEmpty(applicationId.toString())) {
+        if (applicationId == null || StringUtils.isEmpty(applicationId.toString())) {
             throw new RuntimeException("No flink session found on yarn cluster.");
         }
         return applicationId;

Original file line number	Diff line number	Diff line change
`@@ -157,7 +157,7 @@ private static ApplicationId getYarnClusterApplicationId(YarnClient yarnClient)`
`157`	`157`
`158`	`158`	`}`
`159`	`159`
`160`		`- if (StringUtils.isEmpty(applicationId.toString())) {`
	`160`	`+ if (applicationId == null \|\| StringUtils.isEmpty(applicationId.toString())) {`
`161`	`161`	`throw new RuntimeException("No flink session found on yarn cluster.");`
`162`	`162`	`}`
`163`	`163`	`return applicationId;`