[PHOENIX-3974] Create index may issue a distributed dead lock due lack of handlers

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 4.11.0
• Assignee: Sergey Soldatov
• Reporter: Sergey Soldatov
• Created: 22/Jun/17 17:54
• Updated: 21/Aug/17 17:54
• Resolved: 21/Aug/17 17:54

Description

In PHOENIX-3360 we were trying to avoid using index rpc on client side, setting controller manually in Indexer. But after we moved index creating to server side there is another set of RS-RS communication that comes from UngroupedAggregateRegionObserver with regular priority. That may cause distributed dead lock when all handlers are occupied by index create scanners for user table and inside they are trying to send index updates. To prevent it we need to set controller in UngroupedAggregateRegionObserver in the similar way like we did in Indexer.

Issue Links

• is related to: PHOENIX-3994 Index RPC priority still depends on the controller factory property in hbase-site.xml