deniskuzZ commented on code in PR #4882:
URL: https://github.com/apache/hive/pull/4882#discussion_r1759258344
##########
common/src/java/org/apache/hadoop/hive/common/UgiFactory.java:
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@@ -15,8 +15,20 @@
package org.apache.hadoop.hive.common;
import java.io.IOException;
+
+import org.apache.hadoop.security.Credentials;
import org.apache.hadoop.security.UserGroupInformation;
public interface UgiFactory {
- UserGroupInformation createUgi() throws IOException;
+ /*
+ * Creates a UserGroupInformation instance for a user with credentials in a
scope of a specific query.
+ * Subclasses might implement a cache for taking care of reusing an existing
ugi for the same query if possible.
+ */
+ UserGroupInformation createUgi(String queryIdentifier, String user,
Credentials credentials) throws IOException;
+
+ /*
+ * Closes all filesystems for a specific query.
+ * In LLAP daemons for the same dag user and credentials, this call
typically closes a single FileSystem instance.
+ */
+ void closeFileSystemsForQuery(String queryIdentifier);
Review Comment:
question, could we keep the factories and use them in UgiManager that would
maintain the state?
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