FileSystem cache key should be updated after a FileSystem object is created
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Key: HADOOP-3003
URL: https://issues.apache.org/jira/browse/HADOOP-3003
Project: Hadoop Core
Issue Type: Bug
Components: fs
Reporter: Tsz Wo (Nicholas), SZE
Assignee: Tsz Wo (Nicholas), SZE
Fix For: 0.16.2
In FileSystem.get(uri, conf), it first creates a cache key from the uri and the
conf and then lookups the corresponding FileSystem object in the cache. If the
object is not found, it initializes a FileSystem object and put it to the cache
with the key. However, during FileSystem creation, the conf might be modified.
In such case, the key should be updated before putting it to the cache.
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