Alexey Serbin has posted comments on this change. ( http://gerrit.cloudera.org:8080/11562 )
Change subject: [master] extra tests for the placement policy ...................................................................... Patch Set 1: (7 comments) http://gerrit.cloudera.org:8080/#/c/11562/1//COMMIT_MSG Commit Message: http://gerrit.cloudera.org:8080/#/c/11562/1//COMMIT_MSG@11 PS1, Line 11: The test scenario for RF=5 is chosen to exercise the logic where two : replicas per a location does not constitute yet a placement policy : violation. > I'm not sure what this sentence says. Done http://gerrit.cloudera.org:8080/#/c/11562/1/src/kudu/master/placement_policy-test.cc File src/kudu/master/placement_policy-test.cc: http://gerrit.cloudera.org:8080/#/c/11562/1/src/kudu/master/placement_policy-test.cc@598 PS1, Line 598: 3 > I think it's worth naming this as 'num_replicas', here and below. Done http://gerrit.cloudera.org:8080/#/c/11562/1/src/kudu/master/placement_policy-test.cc@601 PS1, Line 601: ASSERT_GE(1, m.count("A_ts0") + m.count("A_ts1")); : ASSERT_GE(1, m.count("B_ts0") + m.count("B_ts1")); : ASSERT_GE(1, m.count("C_ts0")); : ASSERT_GE(1, m.count("D_ts0")); : ASSERT_GE(1, m.count("E_ts0")); : ASSERT_EQ(3, m.count("A_ts0") + m.count("A_ts1") + : m.count("B_ts0") + m.count("B_ts1") + : m.count("C_ts0") + m.count("D_ts0") + m.count("E_ts0")); > Could you write a quick note explaining what the intent of the checks is, i Done http://gerrit.cloudera.org:8080/#/c/11562/1/src/kudu/master/placement_policy-test.cc@625 PS1, Line 625: talbet > tablet Done http://gerrit.cloudera.org:8080/#/c/11562/1/src/kudu/master/placement_policy-test.cc@697 PS1, Line 697: ASSERT_TRUE( : extra_ts->permanent_uuid() == "A_ts2" || : extra_ts->permanent_uuid() == "C_ts0") > Why is this expected? Among the locations where an additional replica can be placed, location A and location C have the least load. As for the preferences within location A, the replica is placed using power-of-two choices among the available servers. I added corresponding comment. http://gerrit.cloudera.org:8080/#/c/11562/1/src/kudu/master/placement_policy-test.cc@704 PS1, Line 704: // This is similar to PlaceExtraTablet_L5_TS10_RF5 but 16 tablet servers instead : // of 10 and slightly different replica distribution. > What specifically is this testing then? Actually, this assumed to be a test that verifies how evenly the replicas are placed among the servers in locations A and B. I updated the test. http://gerrit.cloudera.org:8080/#/c/11562/1/src/kudu/master/placement_policy-test.cc@726 PS1, Line 726: ASSERT_TRUE(extra_ts->permanent_uuid() == "A_ts1" || : extra_ts->permanent_uuid() == "A_ts2" || : extra_ts->permanent_uuid() == "A_ts3" || : extra_ts->permanent_uuid() == "B_ts1" || : extra_ts->permanent_uuid() == "B_ts2" || : extra_ts->permanent_uuid() == "B_ts3") > Why is this pick expected? Updated the overall description. -- To view, visit http://gerrit.cloudera.org:8080/11562 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: kudu Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I49748eca01743fb94846ccd611c5f1c7ddb20c04 Gerrit-Change-Number: 11562 Gerrit-PatchSet: 1 Gerrit-Owner: Alexey Serbin <aser...@cloudera.com> Gerrit-Reviewer: Alexey Serbin <aser...@cloudera.com> Gerrit-Reviewer: Kudu Jenkins Gerrit-Reviewer: Will Berkeley <wdberke...@gmail.com> Gerrit-Comment-Date: Thu, 04 Oct 2018 20:35:03 +0000 Gerrit-HasComments: Yes
