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Squashed 'src/leveldb/' changes from 9094c7f..7924331

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42dcc7e Merge upstream LevelDB 1.17.
e353fbc Release LevelDB 1.17
269fc6c Release LevelDB 1.16
REVERT: 9094c7f Temporarily revert to writing .sst files instead of .ldb

git-subtree-dir: src/leveldb
git-subtree-split: 79243314e40ac31d79c68e5658a1d6a64800d50b
This commit is contained in:
Pieter Wuille
2014-05-09 18:23:34 +02:00
parent 060fdb41fc
commit 938b689846
9 changed files with 60 additions and 43 deletions
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23
db/log_reader.cc
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@@ -133,7 +133,9 @@ bool Reader::ReadRecord(Slice* record, std::string* scratch) {
case kEof:
if (in_fragmented_record) {
ReportCorruption(scratch->size(), "partial record without end(3)");
// This can be caused by the writer dying immediately after
// writing a physical record but before completing the next; don't
// treat it as a corruption, just ignore the entire logical record.
scratch->clear();
}
return false;
@@ -193,13 +195,12 @@ unsigned int Reader::ReadPhysicalRecord(Slice* result) {
eof_ = true;
}
continue;
} else if (buffer_.size() == 0) {
// End of file
return kEof;
} else {
size_t drop_size = buffer_.size();
// Note that if buffer_ is non-empty, we have a truncated header at the
// end of the file, which can be caused by the writer crashing in the
// middle of writing the header. Instead of considering this an error,
// just report EOF.
buffer_.clear();
ReportCorruption(drop_size, "truncated record at end of file");
return kEof;
}
}
@@ -213,8 +214,14 @@ unsigned int Reader::ReadPhysicalRecord(Slice* result) {
if (kHeaderSize + length > buffer_.size()) {
size_t drop_size = buffer_.size();
buffer_.clear();
ReportCorruption(drop_size, "bad record length");
return kBadRecord;
if (!eof_) {
ReportCorruption(drop_size, "bad record length");
return kBadRecord;
}
// If the end of the file has been reached without reading |length| bytes
// of payload, assume the writer died in the middle of writing the record.
// Don't report a corruption.
return kEof;
}
if (type == kZeroType && length == 0) {