[Feature Request] Drop metric on buffer there is some error on its data/format

[sbengo]

Hi,

We have a device trying to poll a metric defined as:

• Datasource type: COUNTER64
• Conversion: INTEGER

We have an old InfluxDB with 1.0 version on our test/dev environment which INTEGER metric type (uint) is not supported.

Description

When the SNMPCollector tries to send the metric, InfluxDB is returning the following error:

msg="ERROR on Write batchPoint in DB influx_MAIN (1 points) | elapsed : 18.310755ms | Error: {\"error\":\"unable to parse 'paloalto_gc_dropCounters,firewall=MYFIREWALL flowFwdL3TtlZero=0,flowHostServiceDeny=0,flowHostServiceUnknown=0,flowMeterHostThrottle=0,pktAllocFailure=65921,pktAllocFailureCos=842,sessionDiscard=0u 1548296280': invalid number\"}\n "

As it is not send, it is being stored on internal buffer, trying, on every cycle, to resend it, filling the buffer and, indirectly, consuming memory and affecting the other devices.

Feature request

SNMPCollector should be able to:

• Keep the metric on buffer in case of connectivity problems
• Drop the metric if there is some error with metric format/data

[sbengo]

A member of our team created a metric setup as Gauge32 - INTEGER and it was throwing an error trying to write the invalid point on InfluxDB.

We have changed the metric and it spent more than 10 min to complete, seems to be related with the buffer