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delete_misses increases

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Thu, 02/14/2013 - 07:56
johngubba
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I am running a cluster of 3 couchbase nodes.

A client side moxi is configured as below (other params default)
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downstream_max=65535,
downstream_conn_max=4
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freeswitch is client and requests key/values to moxi.

I am using sipp to make bulk calling. After some time, sipp retransmits calls.
and when looked into couchbase stats using cbstats command, I got below,
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delete_misses = 124587
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as this counter increases, retransmission of the calls also increases.

Wt do I do ? Do I miss any configuration ?

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Sun, 02/17/2013 - 13:00
mikew
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A delete miss means that the item your trying to delete doesn't exist. This means you either already deleted it or you never set a value for that key. If your client is retrying upon a delete miss then it sounds like there may be an issue in your client logic.

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Wed, 02/20/2013 - 22:04
johngubba
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thnx for the reply mikew

I never delete a key in couchbase. In my application once I set keys/values, I use them to read only.
The same, when I use memcached server, I dont get any delete misses.

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Thu, 02/21/2013 - 00:14
mikew
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Can you post all of your stats and describe your workload? I know you said you do only gets and sets but how many per second and what is the ratio of each. I only ask because if the stats don't show anything I will try to reproduce this problem to help answer your question. Stats can be gotten with the command below.

/opt/couchbase/bin/cbstats :11210 all

or

/opt/couchbase/bin/cbstats :11210 all -b

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