[jira] [Created] (HDFS-6144) Failing to delete balancer.id in close could prevent balancer from starting the next time

["Ding Yuan (JIRA)" <ji...@apache.org>]

Ding Yuan created HDFS-6144:
-------------------------------

             Summary: Failing to delete balancer.id in close could prevent balancer from starting the next time
                 Key: HDFS-6144
                 URL: https://issues.apache.org/jira/browse/HDFS-6144
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.2.0
            Reporter: Ding Yuan


Line: 215, File: "org/apache/hadoop/hdfs/server/balancer/NameNodeConnector.java"

{noformat}
199: void close() {
212:       try {
213:         fs.delete(BALANCER_ID_PATH, true);
214:       } catch(IOException ioe) {
215:         LOG.warn("Failed to delete " + BALANCER_ID_PATH, ioe);
216:       }
{noformat}

If the FS cannot delete this file for some reason, it will prevent any balancers from running in the future. Should at least retry in this case (or warn the users about this and suggesting them to manually delete this file)?



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