[IGNITE-6835] ODBC driver should handle ungraceful tcp disconnects - ASF JIRA

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Details

Type: Bug
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: 2.1
Fix Version/s: 2.4
Component/s: odbc
Labels:
- odbc

Description

It is found that ungraceful TCP disconnect makes ODBC driver stuck at socket recv().
Ungraceful TCP disconnect could be caused:
1. Network failure (or new firewall rules)
2. Remote party shutdown (Half Closed Connection)

So, the proposal is:
setup socket options:
1) SO_KEEPALIVE enabled
2) TCP_KEEPIDLE to 60 sec. It is 2 hour by default
3) TCP_KEEPINTVL to 1 sec. It is 1 sec at Win and 75 sec at Linux by default.
4) send/receive buffers to some greater value (8k by default)