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Date: Wed, 3 Jun 2015 13:18:24 -0700
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 <CAMUR=WhsY37U+5g8cbedHK6aJNU21WBGYZWw2_82wyzHv6hHkA@mail.gmail.com>
Subject: Re: Getting error "unable to create sequence znode"
From: =?UTF-8?B?UmHDumwgR3V0acOpcnJleiBTZWdhbMOpcw==?= <rgs@itevenworks.net>
To: "user@zookeeper.apache.org" <user@zookeeper.apache.org>
Cc: zookeeper-user@hadoop.apache.org
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On 3 June 2015 at 12:45, kvanhorn <kara_vanhorn@cable.comcast.com> wrote:

> Hi Raul,
>
> Thanks for the quick reply.
>
> We're using the Perl (v 5.8.8) wrapper of the C library:
>
>     my $lock_tmpl = $lock_prefix . "/" . $lock_name . "-";
>     my $lock_path = $zkh->create($lock_tmpl, $self->{data},
>         flags => (ZOO_EPHEMERAL | ZOO_SEQUENCE),
>         acl   => ZOO_OPEN_ACL_UNSAFE) or
>     die "unable to create sequence znode $lock_tmpl: " . $zkh->get_error .
> "\n";
>
> My question was poorly phrased--I should have asked what would cause such
> an
> error?
>
> The "-9" is the result of the "get_error()" call in the Lock.pm code
> snippet
> above, but I have not been able to find where those numeric error values
> are
> located again.  I usually use the "str_error()" call instead, but this is
> in
> the Perl library, so...
>

So the Perl lib is a wrapper for the C lib, so that comes from:

src/c/include/zookeeper.h:  ZINVALIDSTATE = -9, /*!< Invliad zhandle state
*/

(see it here:
https://github.com/apache/zookeeper/blob/trunk/src/c/include/zookeeper.h#L95
)

It can happen when your session expired, for instance.


-rgs

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