Fangmin Lv created ZOOKEEPER-2870:
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Summary: Improve the efficiency of AtomicFileOutputStream
Key: ZOOKEEPER-2870
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2870
Project: ZooKeeper
Issue Type: Improvement
Components: server
Affects Versions: 3.5.3, 3.4.10, 3.6.0
Reporter: Fangmin Lv
Assignee: Fangmin Lv
The AtomicFileOutputStream extends from FilterOutputStream, where the write
function writes data to underlying stream byte by byte:
https://searchcode.com/codesearch/view/17990706/, which is very inefficient.
Currently, we only this this class to write the dynamic config, because it's
quite small it won't be a big problem. But in the future we may want to use
this class to write the snapshot file, which will take much longer time, tested
inside, writing 600MB snapshot will take more than 10 minutes, while using
FileOutputStream directly only takes 6s.
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