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fix flaky DBSSTTest.DeleteSchedulerMultipleDBPaths 

Summary:
I landed #3544 which made this test flaky. The reason was the files scheduled for deletion sometimes went through the trash-marking process, and sometimes were deleted directly. Our counter only bumped on the former code path, so if the latter code path was used, we'd miss counting a file deleted by deletion scheduler. This PR also bumps the counter in the latter code path.
Closes https://github.com/facebook/rocksdb/pull/3593

Differential Revision: D7226173

Pulled By: yiwu-arbug

fbshipit-source-id: 81ab44c60834df6ff88db1d73ea34e26c6e93c39
This commit is contained in:
Andrew Kryczka 2018-03-13 14:46:41 -07:00 committed by Facebook Github Bot
parent 7153153e4b
commit 2256dab135
1 changed files with 8 additions and 3 deletions
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11
db/db_sst_test.cc
View File

@ -409,6 +409,11 @@ TEST_F(DBSSTTest, DeleteSchedulerMultipleDBPaths) {
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"DeleteScheduler::DeleteTrashFile:DeleteFile",
[&](void* arg) { bg_delete_file++; });
// The deletion scheduler sometimes skips marking file as trash according to
// a heuristic. In that case the deletion will go through the below SyncPoint.
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"DeleteScheduler::DeleteFile",
[&](void* arg) { bg_delete_file++; });
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
Options options = CurrentOptions();
@ -461,15 +466,15 @@ TEST_F(DBSSTTest, DeleteSchedulerMultipleDBPaths) {
sfm->WaitForEmptyTrash();
ASSERT_EQ(bg_delete_file, 8);
// Compaction will delete and regenerate a file from L1 in second db path. It
// should still be cleaned up via delete scheduler.
// Compaction will delete both files and regenerate a file in L1 in second
// db path. The deleted files should still be cleaned up via delete scheduler.
compact_options.bottommost_level_compaction =
BottommostLevelCompaction::kForce;
ASSERT_OK(db_->CompactRange(compact_options, nullptr, nullptr));
ASSERT_EQ("0,1", FilesPerLevel(0));
sfm->WaitForEmptyTrash();
ASSERT_EQ(bg_delete_file, 9);
ASSERT_EQ(bg_delete_file, 10);
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
}