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Support for LZ4 compression.

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This commit is contained in:
Albert Strasheim
2014-02-07 18:12:30 -08:00
parent 4159a284c2
commit df2f92214a
11 changed files with 346 additions and 43 deletions
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24
table/block_based_table_builder.cc
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@@ -233,6 +233,30 @@ void BlockBasedTableBuilder::WriteBlock(BlockBuilder* block,
type = kNoCompression;
}
break;
case kLZ4Compression:
if (port::LZ4_Compress(r->options.compression_opts, raw.data(),
raw.size(), compressed) &&
GoodCompressionRatio(compressed->size(), raw.size())) {
block_contents = *compressed;
} else {
// LZ4 not supported, or not good compression ratio, so just
// store uncompressed form
block_contents = raw;
type = kNoCompression;
}
break;
case kLZ4HCCompression:
if (port::LZ4HC_Compress(r->options.compression_opts, raw.data(),
raw.size(), compressed) &&
GoodCompressionRatio(compressed->size(), raw.size())) {
block_contents = *compressed;
} else {
// LZ4 not supported, or not good compression ratio, so just
// store uncompressed form
block_contents = raw;
type = kNoCompression;
}
break;
}
WriteRawBlock(block_contents, type, handle);
r->compressed_output.clear();