[IMPALA-10367] Impala-shell internal error - UnboundLocalError, local variable 'retry_msg' referenced before assign

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: Impala 4.0.0
• Fix Version/s: Impala 4.0.0
• Component/s: Clients
• Labels: regression
• Target Version: Impala 4.0.0
• Epic Color: ghx-label-1
• Assignee: Abhishek Rawat
• Reporter: Tim Armstrong
• Created: 01/Dec/20 04:41
• Updated: 12/Apr/21 01:50
• Resolved: 12/Apr/21 01:50

Description

I saw this error when cancelling a query from impala-shell.

[localhost.EXAMPLE.COM:21050] tpch_parquet> explain select STRAIGHT_JOIN count(distinct l_partkey)
from lineitem join [BROADCAST] supplier on l_suppkey = s_suppkey;
Query: explain select STRAIGHT_JOIN count(distinct l_partkey)
from lineitem join [BROADCAST] supplier on l_suppkey = s_suppkey
Caught exception [Errno 4] Interrupted system call, type=<class 'socket.error'> in ExecuteStatement.
 Cancelling Query
Caught exception [Errno 4] Interrupted system call, type=<class 'socket.error'> in CloseSession.
Warning: close session RPC failed: [Errno 4] Interrupted system call, <class 'socket.error'>
Opened TCP connection to localhost.EXAMPLE.COM:21050
Caught exception [Errno 4] Interrupted system call, type=<class 'socket.error'> in ExecuteStatement.
Caught exception [Errno 4] Interrupted system call, type=<class 'socket.error'> in CloseSession.
Warning: close session RPC failed: [Errno 4] Interrupted system call, <class 'socket.error'>
Error connecting: UnboundLocalError, local variable 'retry_msg' referenced before assign

This code was introduced by IMPALA-9466. I looked at the code briefly and AFAICT it happens when the retry logic is disabled but we hit a TTransportException or similar error.

Issue Links

• is caused by: IMPALA-9466 impala-shell client retry for hs2-http protocol.