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Posted to user@helix.apache.org by Sandeep Nayak <os...@gmail.com> on 2014/02/16 07:09:39 UTC
Helix 0.6.2: HelixManager start
The javadocs
http://helix.apache.org/javadocs/0.6.2-incubating/reference/org/apache/helix/HelixManager.htmlstate
that after connect I should invoke start on the helix manager
instance.
However, I dont see the start API on the HelixManager, does the connect do
the start part too?
Thanks,
Sandeep
RE: Helix 0.6.2: HelixManager start
Posted by Kanak Biscuitwala <ka...@hotmail.com>.
A good place to put this code is in a pre-connect callback (which is added before calling connect). This callback will be invoked after there is an active connection to ZK, but before you are registered with the cluster (e.g. creating a live instance node as a participant, or trying to become the leader as a controller).
Kanak
________________________________
> Date: Sun, 16 Feb 2014 01:06:12 -0800
> Subject: Re: Helix 0.6.2: HelixManager start
> From: g.kishore@gmail.com
> To: user@helix.apache.org
>
> I believe you need to be connect first. Technically some listeners can
> be added without connecting but we in favour of symmetry we enforced
> invoking connect method before adding new listeners.
>
>
> On Sun, Feb 16, 2014 at 12:29 AM, Sandeep Nayak
> <os...@gmail.com>> wrote:
> Should the listeners be registered before invoking connect? Does the
> order matter?
>
>
> On Sat, Feb 15, 2014 at 10:12 PM, Kanak Biscuitwala
> <ka...@hotmail.com>> wrote:
> That's a bug in the javadoc. Yes, connect completely encapsulates
> everything necessary.
>
> Kanak
> ________________________________
>> Date: Sat, 15 Feb 2014 22:09:39 -0800
>> Subject: Helix 0.6.2: HelixManager start
>> From: osgigeek@gmail.com<ma...@gmail.com>
>> To: user@helix.apache.org<ma...@helix.apache.org>
>>
>> The
>> javadocs
> http://helix.apache.org/javadocs/0.6.2-incubating/reference/org/apache/helix/HelixManager.html
>> state that after connect I should invoke start on the helix manager
>> instance.
>>
>> However, I dont see the start API on the HelixManager, does the connect
>> do the start part too?
>>
>> Thanks,
>>
>> Sandeep
>
>
Re: Helix 0.6.2: HelixManager start
Posted by kishore g <g....@gmail.com>.
I believe you need to be connect first. Technically some listeners can be
added without connecting but we in favour of symmetry we enforced invoking
connect method before adding new listeners.
On Sun, Feb 16, 2014 at 12:29 AM, Sandeep Nayak <os...@gmail.com> wrote:
> Should the listeners be registered before invoking connect? Does the order
> matter?
>
>
> On Sat, Feb 15, 2014 at 10:12 PM, Kanak Biscuitwala <ka...@hotmail.com>wrote:
>
>> That's a bug in the javadoc. Yes, connect completely encapsulates
>> everything necessary.
>>
>> Kanak
>> ________________________________
>> > Date: Sat, 15 Feb 2014 22:09:39 -0800
>> > Subject: Helix 0.6.2: HelixManager start
>> > From: osgigeek@gmail.com
>> > To: user@helix.apache.org
>> >
>> > The
>> > javadocs
>> http://helix.apache.org/javadocs/0.6.2-incubating/reference/org/apache/helix/HelixManager.html
>> > state that after connect I should invoke start on the helix manager
>> > instance.
>> >
>> > However, I dont see the start API on the HelixManager, does the connect
>> > do the start part too?
>> >
>> > Thanks,
>> >
>> > Sandeep
>>
>
>
Re: Helix 0.6.2: HelixManager start
Posted by Sandeep Nayak <os...@gmail.com>.
Should the listeners be registered before invoking connect? Does the order
matter?
On Sat, Feb 15, 2014 at 10:12 PM, Kanak Biscuitwala <ka...@hotmail.com>wrote:
> That's a bug in the javadoc. Yes, connect completely encapsulates
> everything necessary.
>
> Kanak
> ________________________________
> > Date: Sat, 15 Feb 2014 22:09:39 -0800
> > Subject: Helix 0.6.2: HelixManager start
> > From: osgigeek@gmail.com
> > To: user@helix.apache.org
> >
> > The
> > javadocs
> http://helix.apache.org/javadocs/0.6.2-incubating/reference/org/apache/helix/HelixManager.html
> > state that after connect I should invoke start on the helix manager
> > instance.
> >
> > However, I dont see the start API on the HelixManager, does the connect
> > do the start part too?
> >
> > Thanks,
> >
> > Sandeep
>
RE: Helix 0.6.2: HelixManager start
Posted by Kanak Biscuitwala <ka...@hotmail.com>.
That's a bug in the javadoc. Yes, connect completely encapsulates everything necessary.
Kanak
________________________________
> Date: Sat, 15 Feb 2014 22:09:39 -0800
> Subject: Helix 0.6.2: HelixManager start
> From: osgigeek@gmail.com
> To: user@helix.apache.org
>
> The
> javadocs http://helix.apache.org/javadocs/0.6.2-incubating/reference/org/apache/helix/HelixManager.html
> state that after connect I should invoke start on the helix manager
> instance.
>
> However, I dont see the start API on the HelixManager, does the connect
> do the start part too?
>
> Thanks,
>
> Sandeep