Hi there

I tried to do what I thought was a simple search across a week's worth of
data on a single-box graylog server (ie it also has ES and mongodb on it)

Basically I did a search for "fieldname:value1 OR fieldname:value2 OR
fieldname:value3" over 7days and graylog just sat there spinning it's
wheels (before hand I was happily doing searches that weren't causing any
grief at all)

The CPU on the graylog server went through the roof, graylog error file
showed no problem, but ES logs showed a bunch of these

indices.breaker.fielddata] [fielddata] New used memory 11155918063 [10.3gb]
for data of [message] would be larger than configured breaker: 10857952051
[10.1gb], breaking

After five minutes of graylog just sitting there, I restarted ES, but
graylog was now borked. The input channels were still receiving data, but
nothing was flowing out. So I restarted graylog and all was good again

Is this expected behaviour, and if so, what is needed to stop it? I've seen
other non-graylog related postings on the ES list about this happening with
large clusters, so it seems to be an error case for ES, but I'm more
concerned over how graylog reacted: ie why didn't it give up and give me an
error page for starters. It looks to me like graylog didn't expect that ES
search to error out and that caused it to block? (I'm assuming ES generated
an error - the logs shows that WARN - I dunno what happens next)


-- 
Cheers

Jason Haar
Information Security Manager, Trimble Navigation Ltd.
Phone: +1 408 481 8171
PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1

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