greatsharp opened a new pull request, #3077:
URL: https://github.com/apache/kvrocks/pull/3077
Why does OOM happened when doing migration?
- If slot only has string or other no-subkey data, then batch_sender will
put raw-key data continuously, it makes rep_ string in WriteBatch class append
string continuously, then OOM at last.
Why should we sleep for a while when function 'SockReadLine' ?
- If we send a big data by APPLYBATCH command to destination node, the
destination node could not process this command rapidly, it will report
'Resource temporarily unavailable' error if we read response immediately.
- So we should sleep for a while then retry reading from fd.
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