[ACCUMULO-3974] Modify Randomwalk Bulk module to catch ACCUMULO-3967

• Type: Test
• Status: Resolved
• Priority: Major
• Resolution: Abandoned
• Component/s: test
• Assignee: Unassigned
• Reporter: Josh Elser
• Created: 25/Aug/15 19:26
• Updated: 28/Oct/20 23:13
• Resolved: 28/Oct/20 23:13

Description

ecn asked me after I committed a fix for ACCUMULO-3967 "why didn't randomwalk catch this bug?"

I think we could potentially have caught this if in Setup we pre-split the table to be a large collection of sequentially increasing tablets. It's not a guarantee catch (since the bug itself was only shown in the case of import failures and the tablet distribution hasn't changed).

Alternatively, we could copy the existing bulk module into a new module. In this module, we remove the splitting and merging, instead keeping a static split distribution. This would be almost guaranteed to eventually recreate the scenario. Adding in a chaotic balancer, even more likely to reproduce.

Issue Links

• relates to: ACCUMULO-3967 bulk import loses records when loading pre-split table