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Revert "Disable caching for JarURLConnection to avoid sharing JarFile with other users when loading resource from URL in Configuration class. Contributed by Zhihai Xu"

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This reverts commit e690a32e57.
This commit is contained in:
Zhihai Xu 2015-09-18 10:30:40 -07:00
parent 372ad270a0
commit 3732d5238a
2 changed files with 1 additions and 14 deletions
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4
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -782,10 +782,6 @@ Release 2.8.0 - UNRELEASED
HADOOP-12413. AccessControlList should avoid calling getGroupNames in
isUserInList with empty groups. (Zhihai Xu via cnauroth)
HADOOP-12404. Disable caching for JarURLConnection to avoid sharing
JarFile with other users when loading resource from URL in Configuration
class. (zxu)
OPTIMIZATIONS
HADOOP-11785. Reduce the number of listStatus operation in distcp

11
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configuration.java
View File

@ -34,9 +34,7 @@
import java.io.Writer;
import java.lang.ref.WeakReference;
import java.net.InetSocketAddress;
import java.net.JarURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
@ -2533,14 +2531,7 @@ private Document parse(DocumentBuilder builder, URL url)
if (url == null) {
return null;
}
URLConnection connection = url.openConnection();
if (connection instanceof JarURLConnection) {
// Disable caching for JarURLConnection to avoid sharing JarFile
// with other users.
connection.setUseCaches(false);
}
return parse(builder, connection.getInputStream(), url.toString());
return parse(builder, url.openStream(), url.toString());
}
private Document parse(DocumentBuilder builder, InputStream is,