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Zookeeper >> mail # dev >> ZOOKEEPER-1731


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Dave Latham 2013-07-26, 04:52
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Ted Dunning 2013-07-26, 04:59
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Camille Fournier 2013-07-26, 05:10
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Dave Latham 2013-07-26, 05:30
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Re: ZOOKEEPER-1731
Dave, if you want to create a patch based on this fix I'm happy to review
and apply if it looks good.

C
On Fri, Jul 26, 2013 at 1:30 AM, Dave Latham <[EMAIL PROTECTED]> wrote:

> Looking at the patch in ZOOKEEPER-1505 it looks like it did do just a
> simple replace with a ConcurrentHashMap.
>
>
> On Thu, Jul 25, 2013 at 10:10 PM, Camille Fournier <[EMAIL PROTECTED]
> >wrote:
>
> > Looks like this was fixed in 3.5 as a result of ZOOKEEPER-1505. Perhaps
> we
> > can grab something from that (larger) patch to fix it. I agree that it
> > looks like a bug.
> >
> > C
> >
> >
> > On Fri, Jul 26, 2013 at 12:59 AM, Ted Dunning <[EMAIL PROTECTED]>
> > wrote:
> >
> > > That does look wrong at first glance.  Certainly the hang is a bad
> thing,
> > > no matter the cause.
> > >
> > > Switching hash map types is low impact, but do you have any way to
> > > replicate the problem so that we can tell if it really fixes things?
> > >
> > >
> > > On Thu, Jul 25, 2013 at 9:52 PM, Dave Latham <[EMAIL PROTECTED]>
> > wrote:
> > >
> > > > We bumped into a what looks like a pretty serious but simple
> > concurrency
> > > > bug in ZOOKEEPER-1731.  It looks like the fix may be as simple as
> > using a
> > > > ConcurrentHashMap rather than a HashMap.  Is anyone able to take a
> > quick
> > > > look?
> > > >
> > > > Thanks,
> > > > Dave
> > > >
> > >
> >
>
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Dave Latham 2013-07-29, 22:16
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB