[FLINK-25406] Make sure that FileSystemBlobStore flushes all writes to disk to persist stored blobs

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.15.0
• Fix Version/s: 1.15.0
• Component/s: Runtime / Coordination
• Labels: pull-request-available
• Assignee: Till Rohrmann
• Reporter: Till Rohrmann
• Created: 21/Dec/21 15:40
• Updated: 19/Jan/22 15:43
• Resolved: 19/Jan/22 15:43

Description

In order to avoid that the FileSystemBlobStore loses blobs, we have to make sure that all written results are flushed from the OS page cache to disk (fsynced).

Issue Links

• links to: GitHub Pull Request #18192