GWicke has uploaded a new change for review.

  https://gerrit.wikimedia.org/r/190156

Change subject: Remove preheat_kernel_page_cache option
......................................................................

Remove preheat_kernel_page_cache option

Somehow this old option slipped through in the update for 2.1.2. Cassandra
will refuse to start if set. It does helpfully point out the offending option
in its log instead of merely complaining but starting up. Looks like the
school of 'be strict in what you accept'.

Change-Id: Ifc3934f3420a7664d86ae73ddb4e54e49fc11fa4
---
M templates/cassandra.yaml.erb
1 file changed, 0 insertions(+), 6 deletions(-)


  git pull ssh://gerrit.wikimedia.org:29418/operations/puppet/cassandra 
refs/changes/56/190156/1

diff --git a/templates/cassandra.yaml.erb b/templates/cassandra.yaml.erb
index 604cf31..b5ce977 100644
--- a/templates/cassandra.yaml.erb
+++ b/templates/cassandra.yaml.erb
@@ -764,9 +764,3 @@
 # reducing overhead from the TCP protocol itself, at the cost of increasing
 # latency if you block for cross-datacenter responses.
 inter_dc_tcp_nodelay: false
-
-# Enable or disable kernel page cache preheating from contents of the key 
cache after compaction.
-# When enabled it would preheat only first "page" (4KB) of each row to optimize
-# for sequential access. Note: This could be harmful for fat rows, see 
CASSANDRA-4937
-# for further details on that topic.
-preheat_kernel_page_cache: false

-- 
To view, visit https://gerrit.wikimedia.org/r/190156
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Gerrit-MessageType: newchange
Gerrit-Change-Id: Ifc3934f3420a7664d86ae73ddb4e54e49fc11fa4
Gerrit-PatchSet: 1
Gerrit-Project: operations/puppet/cassandra
Gerrit-Branch: master
Gerrit-Owner: GWicke <[email protected]>

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