Ottomata has submitted this change and it was merged.

Change subject: Change varnishkafka webrequest required.acks to 1
......................................................................


Change varnishkafka webrequest required.acks to 1

We are seeing a slowdown in produce request RTT with 0.8.2.1
and required.acks=-1.  1 seems to help, and should be acceptable
for webrequest data.

Change-Id: I3713775dca6e818ed66f7f99e3fdfc99e5239138
---
M modules/role/manifests/cache/kafka/webrequest.pp
1 file changed, 2 insertions(+), 2 deletions(-)

Approvals:
  Ottomata: Verified; Looks good to me, approved



diff --git a/modules/role/manifests/cache/kafka/webrequest.pp 
b/modules/role/manifests/cache/kafka/webrequest.pp
index f0ae40a..89a7bd8 100644
--- a/modules/role/manifests/cache/kafka/webrequest.pp
+++ b/modules/role/manifests/cache/kafka/webrequest.pp
@@ -38,8 +38,8 @@
         # Perhaps this is a buffer bloat problem.
         # Note that varnishkafka will retry a timed-out produce request.
         topic_request_timeout_ms     => 2000,
-        # -1 means all brokers in the ISR must ACK this request.
-        topic_request_required_acks  => '-1',
+        # 1 means only the leader broker must ACK each produce request
+        topic_request_required_acks  => '1',
         # Write out stats to varnishkafka.stats.json
         # this often.  This is set at 15 so that
         # stats will be fresh when polled from gmetad.

-- 
To view, visit https://gerrit.wikimedia.org/r/230685
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Gerrit-MessageType: merged
Gerrit-Change-Id: I3713775dca6e818ed66f7f99e3fdfc99e5239138
Gerrit-PatchSet: 1
Gerrit-Project: operations/puppet
Gerrit-Branch: production
Gerrit-Owner: Ottomata <[email protected]>
Gerrit-Reviewer: Ottomata <[email protected]>

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