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Posted to common-issues@hadoop.apache.org by GitBox <gi...@apache.org> on 2020/08/22 12:31:51 UTC

[GitHub] [hadoop] steveloughran commented on pull request #2179: HADOOP-17166. ABFS: making max concurrent requests and max requests that can be que…

steveloughran commented on pull request #2179:
URL: https://github.com/apache/hadoop/pull/2179#issuecomment-678634936


   Prefer you use the strategy outlined in HADOOP-17195. Rather than pool settings for each output stream, the store has a single shared pool with semaphores to limit #of active entries per output stream. org.apache.hadoop.util.SemaphoredDelegatingExecutor does this for you. This ensures that when there is a low #of output streams, they good upload performance, but in heavy use then it throttles back. 


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