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References: <1473814418681-7726.post@n6.nabble.com> <1473858746821-7746.post@n6.nabble.com>
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From: Nikolai Tikhonov <ntikhonov@apache.org>
Date: Wed, 14 Sep 2016 20:05:54 +0300
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Subject: Re: Apache Ignite cluster freeze after a period of time
To: user@ignite.apache.org
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archived-at: Wed, 14 Sep 2016 17:05:58 -0000

--94eb2c060f220184ad053c7abe0b
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Hi,

How I see from logs you are performing putAll from many threads and I think
that you got deadlock because try to get locks on keys in random order. For
example: first thread try to lock K1 and K2 and second thread K2 and K1.
Please, make sure that you pass sorted map to putAll (for example TreeMap
instead of HashMap).

On Wed, Sep 14, 2016 at 7:53 PM, qwertywx <qwertywx@hotmail.com> wrote:

> Hello,
>
> I got the thread dump but in there I found something strange.  dump.log
> <http://apache-ignite-users.70518.x6.nabble.com/file/n7749/dump.log>
>
> It seems there is a deadlock as the dump says. But I do not know the reason
> of it :(
>
> Any ideas?
>
>
>
> --
> View this message in context: http://apache-ignite-users.
> 70518.x6.nabble.com/Apache-Ignite-cluster-freeze-after-a-
> period-of-time-tp7726p7749.html
> Sent from the Apache Ignite Users mailing list archive at Nabble.com.
>

--94eb2c060f220184ad053c7abe0b
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi,<div><br><div><div>How I see from logs you are performi=
ng putAll from many threads and I think that you got deadlock because try t=
o get locks on keys in random order. For example: first thread try to lock =
K1 and K2 and second thread K2 and K1. Please, make sure that you pass sort=
ed map to putAll (for example TreeMap instead of HashMap).<br></div></div><=
/div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Wed=
, Sep 14, 2016 at 7:53 PM, qwertywx <span dir=3D"ltr">&lt;<a href=3D"mailto=
:qwertywx@hotmail.com" target=3D"_blank">qwertywx@hotmail.com</a>&gt;</span=
> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bo=
rder-left:1px #ccc solid;padding-left:1ex">Hello,<br>
<br>
I got the thread dump but in there I found something strange.=C2=A0 dump.lo=
g<br>
&lt;<a href=3D"http://apache-ignite-users.70518.x6.nabble.com/file/n7749/du=
mp.log" rel=3D"noreferrer" target=3D"_blank">http://apache-ignite-users.<wb=
r>70518.x6.nabble.com/file/<wbr>n7749/dump.log</a>&gt;<br>
<br>
It seems there is a deadlock as the dump says. But I do not know the reason=
<br>
of it :(<br>
<br>
Any ideas?<br>
<br>
<br>
<br>
--<br>
View this message in context: <a href=3D"http://apache-ignite-users.70518.x=
6.nabble.com/Apache-Ignite-cluster-freeze-after-a-period-of-time-tp7726p774=
9.html" rel=3D"noreferrer" target=3D"_blank">http://apache-ignite-users.<wb=
r>70518.x6.nabble.com/Apache-<wbr>Ignite-cluster-freeze-after-a-<wbr>period=
-of-time-tp7726p7749.<wbr>html</a><br>
<div class=3D"HOEnZb"><div class=3D"h5">Sent from the Apache Ignite Users m=
ailing list archive at Nabble.com.<br>
</div></div></blockquote></div><br></div>

--94eb2c060f220184ad053c7abe0b--