Adar Dembo has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/8375 )

Change subject: KUDU-2162 Expose stats about scan filters
......................................................................


Patch Set 10:

(3 comments)

http://gerrit.cloudera.org:8080/#/c/8375/10/java/kudu-client/src/main/java/org/apache/kudu/client/ResourceMetrics.java
File java/kudu-client/src/main/java/org/apache/kudu/client/ResourceMetrics.java:

http://gerrit.cloudera.org:8080/#/c/8375/10/java/kudu-client/src/main/java/org/apache/kudu/client/ResourceMetrics.java@22
PS10, Line 22: import java.util.HashMap;
             : import java.util.Map;
Don't need? Could you check the rest of the includes?


http://gerrit.cloudera.org:8080/#/c/8375/10/java/kudu-client/src/main/java/org/apache/kudu/client/ResourceMetrics.java@77
PS10, Line 77:   /**
             :    * Returns time taken between a scan rpc request being 
accepted and when it was handled in
             :    * nanoseonds
             :    * @return long representing the time taken between a scan rpc 
request being accepted and when
             :    * it was handled in nanoseonds
             :    */
             :   public long getQueueDurationNanos() {
             :     return queueDurationNanos;
             :   }
             :
             :   /**
             :    * Returns total time taken for a scan rpc request to complete 
in nanoseconds
             :    * @return long representing the time taken for a scan rpc 
request to complete in nanoseconds
             :    */
             :   public long getTotalDurationNanos() {
             :     return totalDurationNanos;
             :   }
             :
These two talk about "scan rpcs", but the values themselves are additive across 
RPCs, right? We should update the Javadoc to reflect that.


http://gerrit.cloudera.org:8080/#/c/8375/10/java/kudu-client/src/test/java/org/apache/kudu/client/TestScannerMultiTablet.java
File 
java/kudu-client/src/test/java/org/apache/kudu/client/TestScannerMultiTablet.java:

http://gerrit.cloudera.org:8080/#/c/8375/10/java/kudu-client/src/test/java/org/apache/kudu/client/TestScannerMultiTablet.java@115
PS10, Line 115:       assertTrue("cpu_user_nanos > 0",
              :               resourceMetrics.getCpuUserNanos() > 0L);
              :       assertTrue("cpu_system_nanos > 0",
              :               resourceMetrics.getCpuSystemNanos() > 0L);
Like with client-test, it seems like this isn't guaranteed to be true.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Id30a7e82357fe2fc28f6d316378a612af43d8c96
Gerrit-Change-Number: 8375
Gerrit-PatchSet: 10
Gerrit-Owner: Will Berkeley <[email protected]>
Gerrit-Reviewer: Adar Dembo <[email protected]>
Gerrit-Reviewer: Anonymous Coward <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Thomas Tauber-Marshall <[email protected]>
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Reviewer: Todd Lipcon <[email protected]>
Gerrit-Comment-Date: Fri, 15 Nov 2019 22:32:46 +0000
Gerrit-HasComments: Yes

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