[CASSANDRA-8271] Remove SSTableDeletingTask

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Later
• Component/s: Legacy/Local Write-Read Paths
• Assignee: Joshua McKenzie
• Reporter: Joshua McKenzie

Authors

Joshua McKenzie

• Created: 06/Nov/14 18:17
• Updated: 16/Apr/19 09:31
• Resolved: 29/Sep/15 20:07

Description

With CASSANDRA-4050 and CASSANDRA-6993, our out-of-order deletion problems w/regards to Windows are resolved and the only outstanding reason to have SSTableDeletingTask would be for support of non-sun VM's w/regards to mmap'ed files. As this is no longer a big concern in the Cassandra ecosystem (non-sun VM's), we should remove SSTableDeletingTask.

The one caveat is that if we want to revisit mmap'ed I/O on Windows in the future we may need to re-use this type of "delayed deletion" approach due to Windows not allowing deletion of hard linked files w/memory-mapped segments in the original file, but CASSANDRA-5863 would obviate that concern.

Issue Links

• is related to: CASSANDRA-5863 In process (uncompressed) page cache
• is related to: CASSANDRA-7066 Simplify (and unify) cleanup of compaction leftovers