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Merge branch 'master' into columnfamilies 

Conflicts:
	db/version_set.cc
This commit is contained in:
Igor Canadi 2014-03-18 14:00:20 -07:00
parent 7ac437c694 758fa8c359
commit e25819a185
3 changed files with 5 additions and 6 deletions
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6
db/compaction_picker.cc
View File

@ -369,12 +369,6 @@ Compaction* LevelCompactionPicker::PickCompaction(Version* version,
Compaction* c = nullptr; Compaction* c = nullptr;
int level = -1; int level = -1;
// Compute the compactions needed. It is better to do it here
// and also in LogAndApply(), otherwise the values could be stale.
std::vector<uint64_t> size_being_compacted(NumberLevels() - 1);
SizeBeingCompacted(size_being_compacted);
version->Finalize(size_being_compacted);
// We prefer compactions triggered by too much data in a level over // We prefer compactions triggered by too much data in a level over
// the compactions triggered by seeks. // the compactions triggered by seeks.
// //

4
db/version_set.cc
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@ -469,6 +469,7 @@ Version::Version(ColumnFamilyData* cfd, VersionSet* vset,
refs_(0), refs_(0),
// cfd is nullptr if Version is dummy // cfd is nullptr if Version is dummy
num_levels_(cfd == nullptr ? 0 : cfd->NumberLevels()), num_levels_(cfd == nullptr ? 0 : cfd->NumberLevels()),
finalized_(false),
files_(new std::vector<FileMetaData*>[num_levels_]), files_(new std::vector<FileMetaData*>[num_levels_]),
files_by_size_(num_levels_), files_by_size_(num_levels_),
next_file_to_compact_by_size_(num_levels_), next_file_to_compact_by_size_(num_levels_),
@ -486,6 +487,7 @@ void Version::Get(const ReadOptions& options,
GetStats* stats, GetStats* stats,
const Options& db_options, const Options& db_options,
bool* value_found) { bool* value_found) {
assert(finalized_);
Slice ikey = k.internal_key(); Slice ikey = k.internal_key();
Slice user_key = k.user_key(); Slice user_key = k.user_key();
const Comparator* ucmp = cfd_->internal_comparator().user_comparator(); const Comparator* ucmp = cfd_->internal_comparator().user_comparator();
@ -651,6 +653,8 @@ bool Version::UpdateStats(const GetStats& stats) {
} }
void Version::Finalize(std::vector<uint64_t>& size_being_compacted) { void Version::Finalize(std::vector<uint64_t>& size_being_compacted) {
assert(!finalized_);
finalized_ = true;
// Pre-sort level0 for Get() // Pre-sort level0 for Get()
if (cfd_->options()->compaction_style == kCompactionStyleUniversal) { if (cfd_->options()->compaction_style == kCompactionStyleUniversal) {
std::sort(files_[0].begin(), files_[0].end(), NewestFirstBySeqNo); std::sort(files_[0].begin(), files_[0].end(), NewestFirstBySeqNo);

1
db/version_set.h
View File

@ -234,6 +234,7 @@ class Version {
Version* prev_; // Previous version in linked list Version* prev_; // Previous version in linked list
int refs_; // Number of live refs to this version int refs_; // Number of live refs to this version
int num_levels_; // Number of levels int num_levels_; // Number of levels
bool finalized_; // True if Finalized is called
// List of files per level, files in each level are arranged // List of files per level, files in each level are arranged
// in increasing order of keys // in increasing order of keys