steveloughran opened a new pull request #2294: URL: https://github.com/apache/hadoop/pull/2294
This is the successor to #2179 1. ABFS Store creates a single threadpool, configurable with fixed size or multiple of cores 1. each output stream is given its own semaphored pool which limits the access that stream has to the pool To actually defend against OOMs the per-stream queue length is what needs to be managed; looking at the patch it still has the problem of #2179: you need one buffer per pending upload in the the pools. Ultimately the S3A Connector fixed this by going to disk buffering by default. A more performant design might be to have a blocking byte buffer factory which limits the #of buffers which the streams can request, so putting an upper bound on the amount of memory which a single ABFS store instance can demand. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
