* Add unexpected/result support
* Rename result.hpp -> result.h && Add NOLINT in expected.hpp
* Add NOLINT in result.h to avoid clang-tidy checker
* Rename result.h to expected.h
* Add Apache License for be/src/util/expected.hpp
* Disable clang-format in be util/expected.hpp
disallow call new method explicitly
force to use create_shared or create_unique to use shared ptr
placement new is allowed
reference https://abseil.io/tips/42 to add factory method to all class.
I think we should follow this guide because if throw exception in new method, the program will terminate.
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Co-authored-by: yiguolei <yiguolei@gmail.com>
`Export` syntax provides asynchronous export function, but `Export` does not achieve vectorization.
`Outfile` syntax provides synchronous export function`.
So we can reimplement the export syntax with oufile syntax.
Fix decimal v3 precision loss issues in the multi-catalog module.
Now it will use decimal v3 to represent decimal type in the multi-catalog module.
Regression Test: `test_load_with_decimal.groovy`
Optimize instr and locate function for constant arguments.
instr and locate function constant arguments has 58%~200% performance improvement.
refactor locate(substr, str, pos) as standardized arguments processing.
Currently, there are some useless includes in the codebase. We can use a tool named include-what-you-use to optimize these includes. By using a strict include-what-you-use policy, we can get lots of benefits from it.
Currently, there are some useless includes in the codebase. We can use a tool named include-what-you-use to optimize these includes. By using a strict include-what-you-use policy, we can get lots of benefits from it.
PR(#17960) has introduced vector table which can map java table to c++ block.
In some cases(java udf & jdbc exector), we should map c++ block to java table. This PR implements this function.
The memory structure of java vector table and c++ block is consistent,
so the implementation doesn't copy the block, just passes the memory address.
when enable pipeline to true, and set instances > 1
because all scan nodes share the scanners, maybe get the profile of scan node is all empty
now show all the scan nodes and remove some infos those that _num_scanners->value() == 0
In #17976, we introduced small fix container to optimize the in expr. This PR will change small fix container size of In set to 8, which has better performance when size > 8 by the perf test.
No check mem tracker limit and no cancel task in mem hook, only in Allocator. This helps in clearer analysis of memory issues and reduces performance loss.
PODArray/hash table/arena memory allocation will use Allocator.
Optimize mem limit exceeded log printing
Optimize compilation time
