xiaokang commented on code in PR #9566:
URL: https://github.com/apache/incubator-doris/pull/9566#discussion_r872940972
##########
be/src/util/block_compression.cpp:
##########
@@ -370,27 +388,39 @@ class ZlibBlockCompression : public BlockCompressionCodec
{
};
Status get_block_compression_codec(segment_v2::CompressionTypePB type,
- const BlockCompressionCodec** codec) {
+ std::unique_ptr<BlockCompressionCodec>&
codec) {
+ BlockCompressionCodec* ptr = nullptr;
switch (type) {
case segment_v2::CompressionTypePB::NO_COMPRESSION:
- *codec = nullptr;
- break;
+ codec.reset(nullptr);
+ return Status::OK();
case segment_v2::CompressionTypePB::SNAPPY:
- *codec = SnappyBlockCompression::instance();
+ ptr = new SnappyBlockCompression();
Review Comment:
Yes, it's an easier way to use codec.reset(new SnappyBlockCompression()).
But I changed to the current more complex way, new a ptr first and then call
ptr->init() and call codec.reset(ptr) finally, to avoid reset codec to a not
properly initialized prt.
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