[NIFI-5959] GetTCP does not reestablish connection

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.8.0, 1.7.1
• Component/s: Core Framework
• Labels: GetTCP
• Environment: Ubuntu 18.4
• Assignee: Unassigned
• Reporter: Craig Knell
• Created: 17/Jan/19 02:53
• Updated: 17/Jan/19 02:53

Description

GetTCP does not reconnect when connection is broken.

Netstat reveals that the connection remains ESTABLISHED.

I understand that as GetTCP does not issue a heartbeat, GetTCP has no way on knowing that the connection has failed; as TCP does not know that the connection has failed.  It is still ESTABLISHED.

Workaround:

Manually restating GetTCP processor when remote site is up fixes the connection. 

Netstat reveals that FIN_WAIT1, then ESTABLISHED occurs, as expected.

Further Comments see:

•  https://community.hortonworks.com/questions/222842/nifi-gettcp-140-problem-wont-reconnect.html
• https://community.hortonworks.com/questions/228934/gettcp-will-not-reconnect-nifi-180.html