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DeleteFilesInRange: Mark files to be deleted as being compacted before applying change

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Summary:
While running the myrocks regression suite, I found that while
dropping a table soon after inserting rows into it resulted in an
assertion failure in CheckConsistencyForDeletes for not finding
a file which was recently added or moved. Marking the files to be
deleted as being compacted before calling LogAndApplyChange
fixed the assertion failures.

Test Plan: DBCompactionTest.DeleteFileRange

Reviewers: IslamAbdelRahman, anthony, yhchiang, kradhakrishnan, sdong

Reviewed By: sdong

Subscribers: dhruba, yoshinorim, leveldb

Differential Revision: https://reviews.facebook.net/D52599
This commit is contained in:
Venkatesh Radhakrishnan 2016-01-07 14:48:45 -08:00
parent f3fb39814d
commit 7ece10ecb6
2 changed files with 20 additions and 3 deletions
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6
db/db_compaction_test.cc
View File

@ -1238,6 +1238,12 @@ TEST_F(DBCompactionTest, DeleteFileRange) {
ASSERT_OK(
DeleteFilesInRange(db_, db_->DefaultColumnFamily(), &begin1, &end1));
// Push data from level 0 to level 1 to force all data to be deleted
// Note that we don't delete level 0 files
compact_options.change_level = true;
compact_options.target_level = 1;
ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr));
ASSERT_OK(
DeleteFilesInRange(db_, db_->DefaultColumnFamily(), nullptr, nullptr));

17
db/db_impl.cc
View File

@ -5013,12 +5013,14 @@ Status DBImpl::DeleteFilesInRange(ColumnFamilyHandle* column_family,
auto cfh = reinterpret_cast<ColumnFamilyHandleImpl*>(column_family);
ColumnFamilyData* cfd = cfh->cfd();
VersionEdit edit;
std::vector<FileMetaData*> deleted_files;
JobContext job_context(next_job_id_.fetch_add(1), true);
{
InstrumentedMutexLock l(&mutex_);
Version* input_version = cfd->current();
auto* vstorage = cfd->current()->storage_info();
for (int i = 0; i < cfd->NumberLevels(); i++) {
auto* vstorage = input_version->storage_info();
for (int i = 1; i < cfd->NumberLevels(); i++) {
if (vstorage->LevelFiles(i).empty() ||
!vstorage->OverlapInLevel(i, begin, end)) {
continue;
@ -5040,7 +5042,9 @@ Status DBImpl::DeleteFilesInRange(ColumnFamilyHandle* column_family,
vstorage->GetOverlappingInputs(i, begin_key, end_key, &level_files, -1,
nullptr, false);
for (const auto* level_file : level_files) {
FileMetaData* level_file;
for (uint32_t j = 0; j < level_files.size(); j++) {
level_file = level_files[j];
if (((begin == nullptr) ||
(cfd->internal_comparator().user_comparator()->Compare(
level_file->smallest.user_key(), *begin) >= 0)) &&
@ -5052,6 +5056,8 @@ Status DBImpl::DeleteFilesInRange(ColumnFamilyHandle* column_family,
}
edit.SetColumnFamily(cfd->GetID());
edit.DeleteFile(i, level_file->fd.GetNumber());
deleted_files.push_back(level_file);
level_file->being_compacted = true;
}
}
}
@ -5059,12 +5065,17 @@ Status DBImpl::DeleteFilesInRange(ColumnFamilyHandle* column_family,
job_context.Clean();
return Status::OK();
}
input_version->Ref();
status = versions_->LogAndApply(cfd, *cfd->GetLatestMutableCFOptions(),
&edit, &mutex_, directories_.GetDbDir());
if (status.ok()) {
InstallSuperVersionAndScheduleWorkWrapper(
cfd, &job_context, *cfd->GetLatestMutableCFOptions());
}
for (auto* deleted_file : deleted_files) {
deleted_file->being_compacted = false;
}
input_version->Unref();
FindObsoleteFiles(&job_context, false);
} // lock released here