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From t...@apache.org
Subject [1/2] kudu git commit: [delete_table-test] Don't fail on multiple attempts to delete an orphaned tablet
Date Wed, 01 Mar 2017 02:25:59 GMT
Repository: kudu
Updated Branches:
  refs/heads/master 5fe0787f6 -> 3ae7fe1c9

[delete_table-test] Don't fail on multiple attempts to delete an orphaned tablet

TestUnknownTabletsAreNotDeleted is flaky with the following assertion:
Value of: num_delete_attempts
  Actual: 3
Expected: 1

This is due to the master receiving more than 1 tablet report before
the tablet server has the time to delete the tablet. Security-related
changes likely shifted the timings and the heartbeat period is set
very low in this test, so this is more likely to happen. Nonetheless
the opportunity for flakyness was there even before these changes.

In addition to fixing the assertion on the metric, this patch also
adds an assertion that the tablet was actually deleted.

Change-Id: I2b5f21c718bad8c0b7112395082371f19a61507f
Reviewed-on: http://gerrit.cloudera.org:8080/6191
Reviewed-by: Adar Dembo <adar@cloudera.com>
Tested-by: David Ribeiro Alves <dralves@apache.org>

Project: http://git-wip-us.apache.org/repos/asf/kudu/repo
Commit: http://git-wip-us.apache.org/repos/asf/kudu/commit/75279b54
Tree: http://git-wip-us.apache.org/repos/asf/kudu/tree/75279b54
Diff: http://git-wip-us.apache.org/repos/asf/kudu/diff/75279b54

Branch: refs/heads/master
Commit: 75279b54682d71e37f9a2cc720180e8c690520a0
Parents: 5fe0787
Author: David Alves <dralves@apache.org>
Authored: Tue Feb 28 15:30:06 2017 -0800
Committer: David Ribeiro Alves <dralves@apache.org>
Committed: Wed Mar 1 01:59:56 2017 +0000

 src/kudu/integration-tests/delete_table-test.cc | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/kudu/integration-tests/delete_table-test.cc b/src/kudu/integration-tests/delete_table-test.cc
index 08a4554..b4c27fc 100644
--- a/src/kudu/integration-tests/delete_table-test.cc
+++ b/src/kudu/integration-tests/delete_table-test.cc
@@ -1053,6 +1053,12 @@ TEST_F(DeleteTableTest, TestUnknownTabletsAreNotDeleted) {
+  // Figure out the tablet id of the created tablet.
+  const MonoDelta timeout = MonoDelta::FromSeconds(30);
+  vector<ListTabletsResponsePB::StatusAndSchemaPB> tablets;
+  ASSERT_OK(WaitForNumTabletsOnTS(ts_map_.begin()->second, 1, timeout, &tablets));
+  const string& tablet_id = tablets[0].tablet_status().tablet_id();
   // Delete the master's metadata and start it back up. The tablet created
   // above is now unknown, but should not be deleted!
@@ -1096,7 +1102,10 @@ TEST_F(DeleteTableTest, TestUnknownTabletsAreNotDeleted) {
         &METRIC_ENTITY_server, "kudu.tabletserver",
         "total_count", &num_delete_attempts));
-    ASSERT_EQ(1, num_delete_attempts);
+    // Sometimes the tablet server has time to report the orphaned tablet multiple times
+    // before the delete succeeds. This is ok because tablet deletion is idempotent.
+    ASSERT_GE(num_delete_attempts, 1);
+    ASSERT_OK(CheckTabletDeletedOnTS(0, tablet_id, SUPERBLOCK_NOT_EXPECTED));

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