[jira] [Created] (HDFS-16045) FileSystem.CACHE memory leak

["Xiangyi Zhu (Jira)" <ji...@apache.org>]

Xiangyi Zhu created HDFS-16045:
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             Summary: FileSystem.CACHE memory leak
                 Key: HDFS-16045
                 URL: https://issues.apache.org/jira/browse/HDFS-16045
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: hdfs
    Affects Versions: 3.4.0
            Reporter: Xiangyi Zhu


{code:java}
FileSystem get(final URI uri, final Configuration conf,
 final String user){code}
When the client turns on the cache and uses the above API to specify the user to create a Filesystem instance, the cache will be invalid.

The specified user creates a new UGI every time he creates a Filesystem instance, and cache compares it according to UGI.
{code:java}
public int hashCode() {
 return (scheme + authority).hashCode() + ugi.hashCode() + (int)unique;
}{code}
Whether you can use username to replace UGI to make a comparison, and whether there are other risks.

 



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