FileSystem cache keep overwriting cached value
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Key: HADOOP-3159
URL: https://issues.apache.org/jira/browse/HADOOP-3159
Project: Hadoop Core
Issue Type: Bug
Reporter: Tsz Wo (Nicholas), SZE
Assignee: Tsz Wo (Nicholas), SZE
Fix For: 0.17.0
Consider the following:
{code}
Configuration conf1 = new Configuration();
FileSystem fs1 = FileSystem.get(conf1); //conf1 may be modified, the cache key
stored will use the modified values.
Configuration conf2 = new Configuration(); //create another conf, which won't
have the modified values.
FileSystem fs2 = FileSystem.get(conf2); //may initialize another FileSystem
instead of returning the cached FileSystem, since conf2 does not have the
modified values initially.
{code}
Therefore, FileSystem.get(conf) may keeps creating FileSystem and replaces the
cached one.
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