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Antoine Pitrou commented on ARROW-13644: ---------------------------------------- > A semaphore will allow me to control how many files I'm writing to at once > but not how many files I have open Why not? > [C++] Create LruCache that works with futures > --------------------------------------------- > > Key: ARROW-13644 > URL: https://issues.apache.org/jira/browse/ARROW-13644 > Project: Apache Arrow > Issue Type: Sub-task > Components: C++ > Reporter: Weston Pace > Assignee: Weston Pace > Priority: Major > > The dataset writer needs an LRU cache to keep track of open files so that it > can respect a "max open files" property (see ARROW-12321). A synchronous > LruCache implementation already exists but on eviction from the cache we need > to wait until all pending writes have completed before we evict the item and > open a new file. This ticket is to create an AsyncLruCache which will allow > the creation of items and the eviction of items to be asynchronous. -- This message was sent by Atlassian Jira (v8.3.4#803005)