[IMPALA-4473] "TThreadPoolServer: TServerTransport died on accept: No more data to read."- occurs when Load Balancer connects to Impala 21000 port

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Duplicate
• Affects Version/s: Impala 2.4.0
• Fix Version/s: Product Backlog
• Component/s: Frontend
• Assignee: Unassigned
• Reporter: Mala Chikka Kempanna
• Created: 10/Nov/16 21:35
• Updated: 15/Nov/16 08:59
• Resolved: 15/Nov/16 08:59

Description

When any external load balancer(or health check applicaiton) sends a connection open request to impala 21000 port periodically, impala server keeps logging these messages in its logs which are misleading.

This indicates a broken communication between impala and any such health checking clients.

1. Impala server should stop writing these logs for any random open request coming to it on port 21000

2. Provide a right interface and interpretable return message for clients wanting to do such connection check .

I1104 08:41:50.665088 15465 thrift-util.cc:109] TThreadPoolServer: TServerTransport died on accept: No more data to read.
I1104 08:41:50.966825 15357 thrift-util.cc:109] TThreadedServer: TServerTransport died on accept: No more data to read.
I1104 08:41:56.140020 15530 thrift-util.cc:109] TThreadPoolServer: TServerTransport died on accept: No more data to read.
I1104 08:41:56.774579 15530 thrift-util.cc:109] TThreadPoolServer: TServerTransport died on accept: No more data to read.
I1104 08:42:00.045030 15465 thrift-util.cc:109] TThreadPoolServer: TServerTransport died on accept: No more data to read.
I1104 08:42:00.344554 15357 thrift-util.cc:109] TThreadedServer: TServerTransport died on accept: No more data to read.
I1104 08:42:00.680503 15465 thrift-util.cc:109] TThreadPoolServer: TServerTransport died on accept: No more data to read.
I1104 08:42:00.978380 15357 thrift-util.cc:109] TThreadedServer: TServerTransport died on accept: No more data to read.

Issue Links

• duplicates: IMPALA-3821 Throttle "TServerTransport died on accept" log messages