jihoonson commented on a change in pull request #6828: Kill Hadoop MR task on
kill of Hadoop ingestion task
URL: https://github.com/apache/incubator-druid/pull/6828#discussion_r248163402
##########
File path:
indexing-service/src/main/java/org/apache/druid/indexing/common/task/HadoopIndexTask.java
##########
@@ -412,6 +430,57 @@ private TaskStatus runInternal(TaskToolbox toolbox)
throws Exception
}
}
+ @Override
+ public void stopGracefully()
+ {
+ final ClassLoader oldLoader =
Thread.currentThread().getContextClassLoader();
+ ObjectMapper objectMapper = new ObjectMapper();
+ File hadoopJobIdFile = new File(getHadoopJobIdFileName());
+ String jobId = null;
+
+ try {
+ if (hadoopJobIdFile.exists()) {
+ jobId = objectMapper.readValue(hadoopJobIdFile, String.class);
+ }
+ }
+ catch (Exception e) {
+ log.info("Exeption while reading json file from path: " +
hadoopJobIdFile);
+ log.error(Throwables.getStackTraceAsString(e));
+ }
+
+ try {
+ if (jobId != null) {
+ ClassLoader loader =
HadoopTask.buildClassLoader(getHadoopDependencyCoordinates(),
+ taskConfig.getDefaultHadoopCoordinates());
+
+ Object killMRJobInnerProcessingRunner =
getForeignClassloaderObject("org.apache.druid.indexing.common.task.HadoopIndexTask$HadoopKillMRJobIdProcessingRunner",
Review comment:
Format:
```java
Object killMRJobInnerProcessingRunner = getForeignClassloaderObject(
"org.apache.druid.indexing.common.task.HadoopIndexTask$HadoopKillMRJobIdProcessingRunner",
loader
);
```
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