Houliang Qi created IOTDB-1020:
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Summary: [Distributed] Split the persist log buffer to better
absorb ingestion
Key: IOTDB-1020
URL: https://issues.apache.org/jira/browse/IOTDB-1020
Project: Apache IoTDB
Issue Type: Improvement
Reporter: Houliang Qi
In the current implementation, we provide only one persist raft log buffer for
each SyncLogDequeSerializer, which means if the buffer is full, we will have to
wait until the buffer is flushed before we can write the next log, thus
creating spikes in ingestions.
So, it is beneficial to split the WAL buffer into a working one and a flushing
one, and if the last flush has completed before we ran out of the current
working one, we can directly swap them, and continue writes.
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