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[Performance Branch] PlainTable to encode rows with seqID 0, value type using 1 internal byte.

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Summary: In PlainTable, use one single byte to represent 8 bytes of internal bytes, if seqID = 0 and it is value type (which should be common for bottom most files). It is to save 7 bytes for uncompressed cases.

Test Plan: make all check

Reviewers: haobo, dhruba, kailiu

Reviewed By: haobo

CC: igor, leveldb

Differential Revision: https://reviews.facebook.net/D15489
This commit is contained in:
Siying Dong
2014-01-27 13:53:22 -08:00
parent 4f6cb17bdb
commit d169b67680
41 changed files with 592 additions and 409 deletions
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4
tools/sst_dump.cc
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@@ -71,7 +71,6 @@ SstFileReader::SstFileReader(const std::string& file_path,
}
Status SstFileReader::NewTableReader(const std::string& file_path) {
table_options_.comparator = &internal_comparator_;
Status s = table_options_.env->NewRandomAccessFile(file_path, &file_,
soptions_);
if (!s.ok()) {
@@ -81,7 +80,8 @@ Status SstFileReader::NewTableReader(const std::string& file_path) {
table_options_.env->GetFileSize(file_path, &file_size);
unique_ptr<TableFactory> table_factory;
s = table_options_.table_factory->NewTableReader(
table_options_, soptions_, std::move(file_), file_size, &table_reader_);
table_options_, soptions_, internal_comparator_, std::move(file_),
file_size, &table_reader_);
return s;
}