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98e3a99a88
Since this hides real problems, since destructor does final flush and if
it fails, then data will be lost.
One of such examples if MEMORY_LIMIT_EXCEEDED exception, so lock
exceptions from destructors, by using
MemoryTracker::LockExceptionInThread to block these exception, and allow
others (so std::terminate will be called, since this is c++11 with
noexcept for destructors by default).
Here is an example, that leads to empty block in the distributed batch:
2021.01.21 12:43:18.619739 [ 46468 ] {7bd60d75-ebcb-45d2-874d-260df9a4ddac} <Error> virtual DB::CompressedWriteBuffer::~CompressedWriteBuffer(): Code: 241, e.displayText() = DB::Exception: Memory limit (for user) exceeded: would use 332.07 GiB (attempt to allocate chunk of 4355342 bytes), maximum: 256.00 GiB, Stack trace (when copying this message, always include the lines below):
0. DB::Exception::Exception<>() @ 0x86f7b88 in /usr/bin/clickhouse
...
4. void DB::PODArrayBase<>::resize<>(unsigned long) @ 0xe9e878d in /usr/bin/clickhouse
5. DB::CompressedWriteBuffer::nextImpl() @ 0xe9f0296 in /usr/bin/clickhouse
6. DB::CompressedWriteBuffer::~CompressedWriteBuffer() @ 0xe9f0415 in /usr/bin/clickhouse
7. DB::DistributedBlockOutputStream::writeToShard() @ 0xf6bed4a in /usr/bin/clickhouse
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|---|---|---|
| .. | ||
| tests | ||
| CachedCompressedReadBuffer.cpp | ||
| CachedCompressedReadBuffer.h | ||
| CheckingCompressedReadBuffer.cpp | ||
| CheckingCompressedReadBuffer.h | ||
| CMakeLists.txt | ||
| CompressedReadBuffer.cpp | ||
| CompressedReadBuffer.h | ||
| CompressedReadBufferBase.cpp | ||
| CompressedReadBufferBase.h | ||
| CompressedReadBufferFromFile.cpp | ||
| CompressedReadBufferFromFile.h | ||
| CompressedWriteBuffer.cpp | ||
| CompressedWriteBuffer.h | ||
| CompressionCodecDelta.cpp | ||
| CompressionCodecDelta.h | ||
| CompressionCodecDoubleDelta.cpp | ||
| CompressionCodecDoubleDelta.h | ||
| CompressionCodecGorilla.cpp | ||
| CompressionCodecGorilla.h | ||
| CompressionCodecLZ4.cpp | ||
| CompressionCodecLZ4.h | ||
| CompressionCodecMultiple.cpp | ||
| CompressionCodecMultiple.h | ||
| CompressionCodecNone.cpp | ||
| CompressionCodecNone.h | ||
| CompressionCodecT64.cpp | ||
| CompressionCodecT64.h | ||
| CompressionCodecZSTD.cpp | ||
| CompressionCodecZSTD.h | ||
| CompressionFactory.cpp | ||
| CompressionFactory.h | ||
| CompressionInfo.h | ||
| getCompressionCodecForFile.cpp | ||
| getCompressionCodecForFile.h | ||
| ICompressionCodec.cpp | ||
| ICompressionCodec.h | ||
| LZ4_decompress_faster.cpp | ||
| LZ4_decompress_faster.h | ||
| ya.make | ||
| ya.make.in | ||