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Hadoop QA commented on AMBARI-12450: ------------------------------------ {color:green}+1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12745877/AMBARI-12450_01.patch against trunk revision . {color:green}+1 @author{color}. The patch does not contain any @author tags. {color:green}+1 tests included{color}. The patch appears to include 1 new or modified test files. {color:green}+1 javac{color}. The applied patch does not increase the total number of javac compiler warnings. {color:green}+1 release audit{color}. The applied patch does not increase the total number of release audit warnings. {color:green}+1 core tests{color}. The patch passed unit tests in ambari-server. Test results: https://builds.apache.org/job/Ambari-trunk-test-patch/3418//testReport/ Console output: https://builds.apache.org/job/Ambari-trunk-test-patch/3418//console This message is automatically generated. > Kerberos: ServiceResourceProvider queries for KDC connectivity when not needed > ------------------------------------------------------------------------------ > > Key: AMBARI-12450 > URL: https://issues.apache.org/jira/browse/AMBARI-12450 > Project: Ambari > Issue Type: Bug > Components: ambari-server > Affects Versions: 2.0.0, 2.0.1, 2.1.0 > Reporter: Robert Levas > Assignee: Robert Levas > Labels: kerberos, rest_api > Fix For: 2.1.1 > > Attachments: AMBARI-12450_01.patch > > > When querying for information about services installed in a Kerberized > cluster via the REST API, the ServiceResourceProvider always attempts to > contact the KDC (or Active Directory) if the KERBEROS service is selected > within the query. > This can be seen about every 15 seconds, when the UI queries for the state > of the services in a Kerberized cluster using the following query: > {noformat} > GET > /api/v1/clusters/{cluster_name}/services?fields=ServiceInfo/state,ServiceInfo/maintenance_state&minimal_response=true > {noformat} > The result from this query does not contain the KDC connectivity attributes > (which is expected), yet the detail are obtained. > This issue causes excess overhead in Ambari as well as on the relevant KDC or > Active Directory. Also the kdamin.log fills up with messages like: > {noformat:title=/var/log/kadmind.log} > Jun 29 14:31:42 some-host-1 kadmind[2383](Notice): Request: kadm5_init, > admin/ad...@example.com, success, client=admin/ad...@example.com, > service=kadmin/some-host-1.c.pramod-thangali.inter...@example.com, > addr=10.240.70.128, vers=3, flavor=6 > Jun 29 14:31:42 some-host-1 kadmind[2383](Notice): Request: > kadm5_get_principal, admin/ad...@example.com, success, > client=admin/ad...@example.com, > service=kadmin/some-host-1.c.pramod-thangali.inter...@example.com, > addr=10.240.70.128 > Jun 29 14:31:42 some-host-1 kadmind[2383](info): closing down fd 29 > Jun 29 14:32:49 some-host-1 kadmind[2383](Notice): Request: kadm5_init, > admin/ad...@example.com, success, client=admin/ad...@example.com, > service=kadmin/some-host-1.c.pramod-thangali.inter...@example.com, > addr=10.240.70.128, vers=3, flavor=6 > Jun 29 14:32:49 some-host-1 kadmind[2383](Notice): Request: > kadm5_get_principal, admin/ad...@example.com, success, > client=admin/ad...@example.com, > service=kadmin/some-host-1.c.pramod-thangali.inter...@example.com, > addr=10.240.70.128 > Jun 29 14:32:49 some-host-1 kadmind[2383](info): closing down fd 29 > Jun 29 14:34:35 some-host-1 kadmind[2383](Notice): Request: kadm5_init, > admin/ad...@example.com, success, client=admin/ad...@example.com, > service=kadmin/some-host-1.c.pramod-thangali.inter...@example.com, > addr=10.240.70.128, vers=3, flavor=6 > Jun 29 14:34:35 some-host-1 kadmind[2383](Notice): Request: > kadm5_get_principal, admin/ad...@example.com, success, > client=admin/ad...@example.com, > service=kadmin/some-host-1.c.pramod-thangali.inter...@example.com, > addr=10.240.70.128 > Jun 29 14:34:35 some-host-1 kadmind[2383](info): closing down fd 29 > Jun 29 14:35:28 some-host-1 kadmind[2383](Notice): Request: kadm5_init, > admin/ad...@example.com, success, client=admin/ad...@example.com, > service=kadmin/some-host-1.c.pramod-thangali.inter...@example.com, > addr=10.240.70.128, vers=3, flavor=6 > Jun 29 14:35:28 some-host-1 kadmind[2383](Notice): Request: > kadm5_get_principal, admin/ad...@example.com, success, > client=admin/ad...@example.com, > service=kadmin/some-host-1.c.pramod-thangali.inter...@example.com, > addr=10.240.70.128 > Jun 29 14:35:28 some-host-1 kadmind[2383](info): closing down fd 29 > {noformat} > *Solution* > Only query for the KDC attributes when explicitly or implicitly queried. This > can be done by conditionally setting the relevant properties near > {{org/apache/ambari/server/controller/internal/ServiceResourceProvider.java:1394}} > by inspecting the request for relevant identifiers using something like the > following: > {code} > requestedIds.contains(propertyId) || isPropertyCategoryRequested(propertyId, > requestedIds); > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)