[SPARK-5300] Spark loads file partitions in inconsistent order on native filesystems

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 1.1.0, 1.2.0
• Component/s: Input/Output

Environment

Linux, EXT4, for example.

• Assignee: Unassigned
• Reporter: Ewan Higgs
• Created: 17/Jan/15 21:28
• Updated: 06/May/20 16:44
• Resolved: 27/Apr/15 20:36

Description

Discussed on user list in April 2014:
http://apache-spark-user-list.1001560.n3.nabble.com/Spark-reads-partitions-in-a-wrong-order-td4818.html

And on dev list January 2015:
http://apache-spark-developers-list.1001551.n3.nabble.com/RDD-order-guarantees-td10142.html

When using a file system which isn't HDFS, file partitions ('part-00000, part-00001', etc.) are not guaranteed to load in the same order. This means previously sorted RDDs will be loaded out of order.

Issue Links

• links to: [Github] Pull Request #4204 (ehiggs)
• links to: [Github] Pull Request #28465 (wetneb)
• links to: [Github] Pull Request #28465 (wetneb)