[jira] [Created] (HDFS-13133) Ozone: OzoneFileSystem: Calling delete with non-exsistent path shouldn't cause ERROR log message

[Elek, Marton (JIRA)]

Elek, Marton created HDFS-13133:
-----------------------------------

             Summary: Ozone: OzoneFileSystem: Calling delete with non-exsistent 
path shouldn't cause ERROR log message
                 Key: HDFS-13133
                 URL: https://issues.apache.org/jira/browse/HDFS-13133
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: ozone
    Affects Versions: HDFS-7240
            Reporter: Elek, Marton
            Assignee: Elek, Marton
             Fix For: HDFS-7240


During the test of OzoneFileSystem with spark I noticed ERROR messages multiple 
times:

Something like this:

{code}
2018-02-11 15:54:54 ERROR OzoneFileSystem:409 - Couldn't delete 
o3://bucket1.test/user/hadoop/.sparkStaging/application_1518349702045_0008 - 
does not exist
{code}

I checked the other implemetations, and they use DEBUG level. I think it's 
expected that the path sometimes points to a non-existing dir/file.

To be consistent with the other implemetation I propose to lower the log level 
to debug.


Examples from other file systems:

S3AFileSystem:

{code}
} catch (FileNotFoundException e) {
      LOG.debug("Couldn't delete {} - does not exist", f);
      instrumentation.errorIgnored();
      return false;
    } catch (AmazonClientException e) {
      throw translateException("delete", f, e);
    }
{code}


Alyun:

{code}
   try {
      return innerDelete(getFileStatus(path), recursive);
    } catch (FileNotFoundException e) {
      LOG.debug("Couldn't delete {} - does not exist", path);
      return false;
    }
{code}


SFTP:

{code}
   } catch (FileNotFoundException e) {
      // file not found, no need to delete, return true
      return false;
    }
{code}

SwiftNativeFileSystem:

{code}
    try {
      return store.delete(path, recursive);
    } catch (FileNotFoundException e) {
      //base path was not found.
      return false;
    }
{code}




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