[ACCUMULO-4040] listSplits fails on IBM JVM

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Auto Closed
• Component/s: client

Environment

IBM J9 JVM. Accumulo 1.6

• Assignee: Unassigned
• Reporter: Jared Winick
• Created: 27/Oct/15 17:02
• Updated: 27/Aug/19 23:19
• Resolved: 27/Aug/19 23:19

Description

I saw a user running on the IBM J9 JVM and the TableOperationsImpl.listSplits never returns as it gets stuck in a loop throwing exceptions. It appears like the root cause is that listSplits calls TableMetadataServicer.getTabletLocations which then calls validateEntries. In here it attempts to cast a Set to a SortedSet

SortedSet<KeyExtent> tabletsKeys = (SortedSet<KeyExtent>) tablets.keySet();

Looks like you can get away with this on a Oracle/OpenJDK JVM as tablets is a TreeMap and its impl returns a NavigableSet which is a SortedSet.