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Merge src/leveldb changes for LevelDB 1.15

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This commit is contained in:
Pieter Wuille
2013-12-12 22:08:18 +01:00
parent fb34be6d59 55c6890294
commit ed873a301e
31 changed files with 449 additions and 366 deletions
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33
src/leveldb/db/version_set.cc
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@@ -876,12 +876,6 @@ Status VersionSet::LogAndApply(VersionEdit* edit, port::Mutex* mu) {
}
if (!s.ok()) {
Log(options_->info_log, "MANIFEST write: %s\n", s.ToString().c_str());
if (ManifestContains(record)) {
Log(options_->info_log,
"MANIFEST contains log record despite error; advancing to new "
"version to prevent mismatch between in-memory and logged state");
s = Status::OK();
}
}
}
@@ -889,8 +883,6 @@ Status VersionSet::LogAndApply(VersionEdit* edit, port::Mutex* mu) {
// new CURRENT file that points to it.
if (s.ok() && !new_manifest_file.empty()) {
s = SetCurrentFile(env_, dbname_, manifest_file_number_);
// No need to double-check MANIFEST in case of error since it
// will be discarded below.
}
mu->Lock();
@@ -1124,31 +1116,6 @@ const char* VersionSet::LevelSummary(LevelSummaryStorage* scratch) const {
return scratch->buffer;
}
// Return true iff the manifest contains the specified record.
bool VersionSet::ManifestContains(const std::string& record) const {
std::string fname = DescriptorFileName(dbname_, manifest_file_number_);
Log(options_->info_log, "ManifestContains: checking %s\n", fname.c_str());
SequentialFile* file = NULL;
Status s = env_->NewSequentialFile(fname, &file);
if (!s.ok()) {
Log(options_->info_log, "ManifestContains: %s\n", s.ToString().c_str());
return false;
}
log::Reader reader(file, NULL, true/*checksum*/, 0);
Slice r;
std::string scratch;
bool result = false;
while (reader.ReadRecord(&r, &scratch)) {
if (r == Slice(record)) {
result = true;
break;
}
}
delete file;
Log(options_->info_log, "ManifestContains: result = %d\n", result ? 1 : 0);
return result;
}
uint64_t VersionSet::ApproximateOffsetOf(Version* v, const InternalKey& ikey) {
uint64_t result = 0;
for (int level = 0; level < config::kNumLevels; level++) {