7999db55da
If a file is opened for reading through the S3A connector is not closed, then when garbage collection takes place * An error message is reported at WARN, including the file name. * A stack trace of where the stream was created is reported at INFO. * A best-effort attempt is made to release any active HTTPS connection. * The filesystem IOStatistic stream_leaks is incremented. The intent is to make it easier to identify where streams are being opened and not closed -as these consume resources including often HTTPS connections from the connection pool of limited size. It MUST NOT be relied on as a way to clean up open files/streams automatically; some of the normal actions of the close() method are omitted. Instead: view the warning messages and IOStatistics as a sign of a problem, the stack trace as a way of identifying what application code/library needs to be investigated. Contributed by Steve Loughran |
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