Kihwal Lee created HADOOP-9981:
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Summary: listing in RawLocalFileSystem is inefficient
Key: HADOOP-9981
URL: https://issues.apache.org/jira/browse/HADOOP-9981
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 2.3.0
Reporter: Kihwal Lee
Priority: Critical
After HADOOP-9652, listStatus() or globStatus() calls against a local file
system directory is very slow. A user was loading data from local file system
to Hive and it took about 30 seconds. The same operation took less than a
second pre-HADOOP-9652.
The input path had many other files beside the input files and strace showed
that fork & exec of stat against each and every one of them. jstack confirmed
that this was being done from getNativeFileLinkStatus().
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