Josh Rosen created SPARK-22982: ---------------------------------- Summary: Remove unsafe asynchronous close() call from FileDownloadChannel Key: SPARK-22982 URL: https://issues.apache.org/jira/browse/SPARK-22982 Project: Spark Issue Type: Bug Components: Spark Core Affects Versions: 2.2.0, 2.1.0, 2.0.0, 1.6.0 Reporter: Josh Rosen Assignee: Josh Rosen Priority: Blocker
Spark's Netty-based file transfer code contains an asynchronous IO bug which may lead to incorrect query results. At a high-level, the problem is that an unsafe asynchronous `close()` of a pipe's source channel creates a race condition where file transfer code closes a file descriptor then attempts to read from it. If the closed file descriptor's number has been reused by an `open()` call then this invalid read may cause unrelated file operations to return incorrect results due to reading different data than intended. I have a small, surgical fix for this bug and will submit a PR with more description on the specific race condition / underlying bug. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org