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src-kafka/core

History

Rajini Sivaram eb09efa9ac KAFKA-7639: Read one request at a time from socket to avoid OOM (#5920) ... Prior to this commit, broker's Selector used to read all requests available on the socket when the socket is ready for read. These are queued up as staged receives. This can result in excessive memory usage when socket read buffer size is large. We mute the channel and stop reading any more data until all the staged requests are processed. This behaviour is slightly inconsistent since for the initial read we drain the socket buffer, allowing it to get filled up again, but if data arrives slighly after the initial read, then we dont read from the socket buffer until pending requests are processed. To avoid holding onto requests for longer than required, this commit removes staged receives and reads one request at a time even if more data is available in the socket buffer. This is especially useful for produce requests which may be large and may take long to process. Additional data read from the socket for SSL is limited to the pre-allocated intermediate SSL buffers. Reviewers: Jun Rao <junrao@gmail.com>, Ismael Juma <ismael@juma.me.uk>		5 years ago
..
src	KAFKA-7639: Read one request at a time from socket to avoid OOM (#5920)	5 years ago
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