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Try to fix ExternalSSTFileTest.IngestNonExistingFile flakines (#4625) 

Summary:
ExternalSSTFileTest.IngestNonExistingFile occasionally fail for number of SST files after manual compaction doesn't go down as expected. Although I don't find a reason how this can happen, adding an extra waiting to make sure obsolete file purging has finished before we check the files doesn't hurt.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4625

Differential Revision: D12910586

Pulled By: siying

fbshipit-source-id: 2a5ddec6908c99cf3bcc78431c6f93151c2cab59
This commit is contained in:
Siying Dong 2018-11-02 17:22:37 -07:00 committed by Facebook Github Bot
parent 6c6cb465b1
commit c3105aa50d
1 changed files with 2 additions and 1 deletions
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3
db/external_sst_file_test.cc
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@ -1317,7 +1317,8 @@ TEST_F(ExternalSSTFileTest, IngestNonExistingFile) {
ASSERT_OK(Flush());
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
ASSERT_OK(dbfull()->TEST_WaitForCompact(true));
// After full compaction, there should be only 1 file.
std::vector<std::string> files;
env_->GetChildren(dbname_, &files);