sollhui opened a new pull request, #40367:
URL: https://github.com/apache/doris/pull/40367

   Meet code dump when using single stream multi table load:
   ```
   SUMMARY: AddressSanitizer: heap-buffer-overflow 
/root/doris/be/src/io/fs/multi_table_pipe.cpp:99:22 in 
doris::io::MultiTablePipe::dispatch(std::__cxx11::basic_string<char, 
std::char_traits<char>, std::allocator<char>> const&, char const*, unsigned 
long, doris::Status (doris::io::KafkaConsumerPipe::*)(char const*, unsigned 
long))
   ```
   
   1. It is hard to guaranteed that  msg is a C-style string ending in '\0' 
character. If not, it may cause the core dump to access memory out of bounds.
   2. It is not need to calculate the length of msg twice.
   
   Therefore,  deleting the logic that using strlen to calculate the length of 
msg.
   
   


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