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net: TestLookupHostCancel failures with "i/o timeout" on netbsd-arm*-bsiegert builders #43626

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bcmills opened this issue Jan 11, 2021 · 2 comments
Closed

net: TestLookupHostCancel failures with "i/o timeout" on netbsd-arm*-bsiegert builders #43626

bcmills opened this issue Jan 11, 2021 · 2 comments
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FrozenDueToAge NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. Testing An issue that has been verified to require only test changes, not just a test failure.
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@bcmills
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bcmills commented Jan 11, 2021 •
edited 

--- FAIL: TestLookupHostCancel (22.63s)
    lookup_test.go:954: lookup www.google.com on 10.0.1.1:53: read udp 10.0.1.34:61734->10.0.1.1:53: i/o timeout
FAIL
FAIL	net	55.015s

2020-12-22T18:36:29-c06a354/netbsd-arm-bsiegert
2020-12-02T16:44:10-5984ea7/netbsd-arm64-bsiegert
2020-11-30T20:15:10-848dff6/netbsd-arm-bsiegert
2020-11-24T07:07:06-6965b01/netbsd-arm-bsiegert
2020-11-19T20:37:38-59f5fda/netbsd-arm64-bsiegert
2020-11-19T19:31:07-498d8d5/netbsd-arm64-bsiegert
2020-11-10T16:25:27-c68745b/netbsd-arm-bsiegert
2020-11-04T06:14:02-5ca43ac/netbsd-arm-bsiegert
2020-10-06T22:54:58-3923460/netbsd-arm64-bsiegert
2020-09-16T03:02:13-eaa97fb/netbsd-arm-bsiegert

May be related to #43140, or perhaps the builder's DNS server has occasional connectivity issues?

CC @bsiegert @golang/osp-team
@bcmills bcmills added Testing An issue that has been verified to require only test changes, not just a test failure. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. labels Jan 11, 2021
@bcmills bcmills added this to the Backlog milestone Jan 11, 2021
@bcmills bcmills changed the title net: TestLookupHostCancel failures with "i/o timeout" net: TestLookupHostCancel failures with "i/o timeout" on netbsd-arm*-bsiegert builders Jan 11, 2021
@bsiegert
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Yes, the builder has occasional packet loss unfortunately. I will move it to a location with better internet in a month.

@bcmills
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bcmills commented Dec 3, 2021

Looks like the connection upgrade did the trick! No failures on -bsiegert builders since January. 😃

greplogs --dashboard -md -l -e 'lookup www\.google\.com .*: i/o timeout' --since=2020-12-01

2021-11-20T01:00:16-be18cd5/darwin-amd64-nocgo
2021-03-25T04:06:37-c69515c/darwin-amd64-nocgo
2021-01-26T00:02:15-ce8b318/netbsd-arm64-bsiegert
2020-12-22T18:36:29-c06a354/netbsd-arm-bsiegert
2020-12-02T16:44:10-5984ea7/netbsd-arm64-bsiegert
2020-12-01T23:39:15-cf7aa58/solaris-amd64-oraclerel

@bcmills bcmills closed this as completed Dec 3, 2021
@golang golang locked and limited conversation to collaborators Dec 3, 2022
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