[KUDU-2323] NON_VOTER replica flapping (repeatedly added and evicted)

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.7.0
• Component/s: consensus
• Target Version/s: 1.8.0
• Assignee: Unassigned
• Reporter: Todd Lipcon
• Created: 22/Feb/18 06:09
• Updated: 08/Jul/21 05:39

Description

In running a YCSB stress workload I see a tablet got into some state where the master flapped back and forth adding and then removing a replica as a NON_VOTER:

I0221 21:54:35.341892 28047 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:35.360297 28045 catalog_manager.cc:3162] Sending ChangeConfig:ADD_PEER:NON_VOTER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:35.612417 28048 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:35.713057 28045 catalog_manager.cc:3162] Sending ChangeConfig:ADD_PEER:NON_VOTER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:35.725723 28045 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:35.752959 28052 catalog_manager.cc:3162] Sending ChangeConfig:ADD_PEER:NON_VOTER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:35.767974 28047 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:35.772202 28045 catalog_manager.cc:3162] Sending ChangeConfig:ADD_PEER:NON_VOTER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.291569 28046 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.296468 28046 catalog_manager.cc:3162] Sending ChangeConfig:ADD_PEER:NON_VOTER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.328945 28045 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.339675 28045 catalog_manager.cc:3162] Sending ChangeConfig:ADD_PEER:NON_VOTER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.387465 28045 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.394716 28047 catalog_manager.cc:3162] Sending ChangeConfig:ADD_PEER:NON_VOTER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.398644 28047 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.405082 28047 catalog_manager.cc:3162] Sending ChangeConfig:ADD_PEER:NON_VOTER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.409888 28048 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.414216 28046 catalog_manager.cc:3162] Sending ChangeConfig:ADD_PEER:NON_VOTER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.417915 28048 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.423548 28048 catalog_manager.cc:3162] Sending ChangeConfig:ADD_PEER:NON_VOTER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.453407 28045 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:54:36.552772 28048 catalog_manager.cc:3162] Sending ChangeConfig:ADD_PEER:NON_VOTER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:58:01.300199 28053 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 21:58:01.426921 28046 catalog_manager.cc:3162] Sending ChangeConfig:ADD_PEER:NON_VOTER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)
I0221 22:01:37.779790 28051 catalog_manager.cc:3274] Sending ChangeConfig:REMOVE_PEER on tablet 4ffc930e9f2148c38e441f19aa230872 (attempt 1)

Issue Links

• is related to: KUDU-2320 Exponential back-off is not applied while retrying tablet replica deletion