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Date: Sat, 5 Jan 2013 09:54:43 +0800
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 <CA++PF=PMyLW+XZC4-whQ4grrr5GWz-nT+hcK_DeFW7e56GL0-Q@mail.gmail.com>
Subject: Re: HiveHistoryViewer concurrency problem
From: Qiang Wang <wsxys08@gmail.com>
To: user@hive.apache.org
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Does Anybody have an idea about this?

https://issues.apache.org/jira/browse/HIVE-3857


2013/1/4 Qiang Wang <wsxys08@gmail.com>

> new HiveHistoryViewer() throws ConcurrentModificationException when called
> concurrently by several threads.
>
> According to the stack trace, HiveHistory.parseLine use *private static
> Map<String, String> parseBuffer* to store parsed data and this caused the
> exception.
>
> I don't know why a static buffer rather than a local buffer is used!
> Anybody have an idea about this?
>

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<div dir=3D"ltr"><div>Does Anybody have an idea about this?<br></div><br><d=
iv class=3D"gmail_extra"><a href=3D"https://issues.apache.org/jira/browse/H=
IVE-3857">https://issues.apache.org/jira/browse/HIVE-3857</a></div><div cla=
ss=3D"gmail_extra">
<br></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">2013/1/=
4 Qiang Wang <span dir=3D"ltr">&lt;<a href=3D"mailto:wsxys08@gmail.com" tar=
get=3D"_blank">wsxys08@gmail.com</a>&gt;</span><br><blockquote class=3D"gma=
il_quote" style=3D"margin-top:0px;margin-right:0px;margin-bottom:0px;margin=
-left:0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border=
-left-style:solid;padding-left:1ex">
<div dir=3D"ltr">new HiveHistoryViewer() throws ConcurrentModificationExcep=
tion when called concurrently by several threads.<br><div><br></div><div>Ac=
cording to the stack trace, HiveHistory.parseLine use=A0<b style=3D"font-st=
yle:italic;text-decoration:underline">private static Map&lt;String, String&=
gt; parseBuffer</b>=A0to store=A0parsed data and this caused the exception.=
</div>

<div><br></div><div>I don&#39;t know why a static buffer rather than a loca=
l buffer is used! Anybody have an idea about this?</div></div>
</blockquote></div><br></div></div>

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