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HADOOP-17505. public interface GroupMappingServiceProvider needs default impl for getGroupsSet() #2661

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Merged
ayushtkn merged 1 commit into from
Apr 21, 2021
Merged

HADOOP-17505. public interface GroupMappingServiceProvider needs default impl for getGroupsSet() #2661

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6 changes: 5 additions & 1 deletion ...t/hadoop-common/src/main/java/org/apache/hadoop/security/GroupMappingServiceProvider.java
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@
package org.apache.hadoop.security;

import java.io.IOException;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;

Expand Down Expand Up @@ -61,5 +62,8 @@ public interface GroupMappingServiceProvider {
* @return set of group memberships of user
* @throws IOException
*/
Set<String> getGroupsSet(String user) throws IOException;
default Set<String> getGroupsSet(String user) throws IOException {
//Override to form the set directly to avoid another conversion
return new LinkedHashSet<>(getGroups(user));
}
}