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90% of RAM problem

4 replies [Last post]
Tue, 01/22/2013 - 11:59
kolchanov
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I have a problem with my bucket when bucket RAM usage is over 90% - update operation continuously failed with 134 status code.
I' m expecting that database server should remove unused data from RAM and store this data only on disk.

Documentation:
Couchbase automatically moves data between RAM and disk (asynchronously in the background) in order to keep regularly used information in memory, and less frequently used data on disk. Couchbase constantly monitors the information accessed by clients, keeping the active data within the caching layer.

So, I created issue MB-7570, but this issue was resolved as expected behavior.

It is very strange for me, It means that couchbase server simply can't store more data than RAM!

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Tue, 01/22/2013 - 14:15
tgrall
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Hello,

Will follow up on the JIRA

Regards

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Tug
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Wed, 01/23/2013 - 00:41
kolchanov
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It seems that we hit metadata limitations.

Like this
http://www.couchbase.com/forums/thread/couchbase-stops-ejecting-keys-dis...

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Mon, 01/28/2013 - 08:13
tgrall
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Hello,

With the understanding of this behavior were you able to work around this by adding new ressources to match your working set?

Regards

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@tgrall

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Mon, 01/28/2013 - 10:24
kolchanov
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Yes.

As improovement suggest I recommend to have other error code in this case.
"System to busy" and "temporary failure" does not help to understand problem. .
Should I open new improovement issue?

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