Sometimes connection cannot be released properly during on_free. We need
on_close callback as the last resort.
Signed-off-by: freemandealer <freeman.zhang1992@gmail.com>
* Add streaming load feature. You can execute 'help stream load;' to see more information.
Changed:
* Loading phase of a certain table can be parallelized, to reduce the load job execution time when multi load jobs to a single table.
* Using RocksDB to save the header info of tablets in Backends, to reduce the IO operations and increate speeding of restarting.
Fixed:
* A lot of bugs fixed.
