HftpFileSystem should not start a RenewerThread in the static initializer
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Key: HDFS-1389
URL: https://issues.apache.org/jira/browse/HDFS-1389
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Tsz Wo (Nicholas), SZE
{code}
//HftpFileSystem
private static RenewerThread renewer = new RenewerThread();
static {
renewer.start();
}
{code}
HftpFileSystem creates and starts a RenewerThread in the static initializer.
Starting a thread is expensive and the RenewerThread is not required in some
cases. One typical example is calling HftpFileSystem.makeQualified(Path path).
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