thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-09-24 18:50:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

Account offset in readBig call

Browse Source
This commit is contained in:
alesapin 2021-10-06 12:39:54 +03:00
parent 9aab0eb0a2
commit 621c9884fc
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/Compression/CompressedReadBufferFromFile.cpp
View File

@ -123,9 +123,11 @@ size_t CompressedReadBufferFromFile::readBig(char * to, size_t n)
auto additional_size_at_the_end_of_buffer = codec->getAdditionalSizeAtTheEndOfBuffer();
/// If the decompressed block fits entirely where it needs to be copied.
if (size_decompressed + additional_size_at_the_end_of_buffer <= n - bytes_read)
/// If the decompressed block fits entirely where it needs to be copied and we don't
/// need to skip some bytes in decompressed data (seek happened before readBig call).
if (nextimpl_working_buffer_offset == 0 && size_decompressed + additional_size_at_the_end_of_buffer <= n - bytes_read)
{
decompressTo(to + bytes_read, size_decompressed, size_compressed_without_checksum);
bytes_read += size_decompressed;
bytes += size_decompressed;