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From: Todd Lipcon <todd@cloudera.com>
Date: Thu, 17 Feb 2011 16:13:42 -0800
Message-ID: <AANLkTik7AjpYD9iy4UDfxjrcMe4Qw-wevmWQ5UKE0W36@mail.gmail.com>
Subject: Re: version check for hbase-default.xml
To: dev@hbase.apache.org
Cc: Ted Yu <yuzhihong@gmail.com>
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On Thu, Feb 17, 2011 at 4:03 PM, Ted Yu <yuzhihong@gmail.com> wrote:

> An alternative is to check the value of a well-known config parameter which
> has changed from 20.6 (0.89) to 0.90.x
>
> After almost all 0.20.6 and 0.89 deployments are gone in the world, toggle
> to version check.
>

Better would be to use the classloader to find the hbase-default.xml path
that got loaded and include that in the error. File a JIRA and let's fix for
0.90.2.

-Todd


>
> On Thu, Feb 17, 2011 at 3:51 PM, Ted Yu <yuzhihong@gmail.com> wrote:
>
> > Your change cannot distinguish missing hbase-default.xml and the old
> > hbase-default.xml
> > This makes debugging hard, considering what I said in my first email.
> >
> >
> > On Thu, Feb 17, 2011 at 3:26 PM, Todd Lipcon <todd@cloudera.com> wrote:
> >
> >> Then you've probably got another hbase-default somewhere on your
> >> classpath.
> >>
> >>
> >> On Thu, Feb 17, 2011 at 3:26 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> >>
> >>> I checked the size of the packaged file which is the same as the build
> >>> artifact:
> >>>
> >>> tyumac:hbase-0.90.1 tyu$ ls -l target/classes/hbase-default.xml
> >>> -rw-r--r--  1 tyu  staff  23610 Feb 11 11:50
> >>> target/classes/hbase-default.xml
> >>>
> >>> I also unpacked the file and saw the correct version.
> >>>
> >>>
> >>> On Thu, Feb 17, 2011 at 3:17 PM, Todd Lipcon <todd@cloudera.com>
> wrote:
> >>>
> >>>> Where are you getting the hbase-defaults.xml file that you're
> packaging
> >>>> into your jar?
> >>>>
> >>>> You need to take it out of the hbase jar that ships with 0.90.1 and
> >>>> package that one -- my guess is you've packaged one from an older
> version.
> >>>>
> >>>> -Todd
> >>>>
> >>>> On Thu, Feb 17, 2011 at 3:01 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> >>>>
> >>>>> We re-package hbase jar into the jar containing our classes.
> >>>>>
> >>>>> [sjc1-hadoop0.sjc1:hadoop 36789]jar tvf
> >>>>> /usr/local/hadoop/sims/lib/flow-m2m_hbase_regr-38.jar | grep MetaSca
> >>>>>  7030 Fri Feb 11 11:50:28 GMT+00:00 2011
> >>>>> org/apache/hadoop/hbase/client/MetaScanner.class
> >>>>>  2027 Fri Feb 11 11:50:28 GMT+00:00 2011
> >>>>> org/apache/hadoop/hbase/client/MetaScanner$1.class
> >>>>> [sjc1-hadoop0.sjc1:hadoop 36791]jar tvf
> >>>>> /usr/local/hadoop/sims/lib/flow-m2m_hbase_regr-38.jar | grep default
> |
> >>>>> grep
> >>>>> hbase
> >>>>>  23610 Fri Feb 11 11:50:22 GMT+00:00 2011 hbase-default.xml
> >>>>>
> >>>>> If the above jar structure is incorrect, please comment.
> >>>>>
> >>>>> Using 0.90.1 jar as client, I saw:
> >>>>>
> >>>>> INFO [2011-02-17 06:52:23] (ExecUtil.java:261) -
> >>>>> java.lang.RuntimeException: hbase-default.xml file seems to be for
> and
> >>>>> old version of HBase (null), this version is 0.90.1
> >>>>> INFO [2011-02-17 06:52:23] (ExecUtil.java:261) -       at
> >>>>>
> >>>>>
> org.apache.hadoop.hbase.HBaseConfiguration.checkDefaultsVersion(HBaseConfiguration.java:66)
> >>>>> INFO [2011-02-17 06:52:23] (ExecUtil.java:261) -       at
> >>>>>
> >>>>>
> org.apache.hadoop.hbase.HBaseConfiguration.addHbaseResources(HBaseConfiguration.java:76)
> >>>>> INFO [2011-02-17 06:52:23] (ExecUtil.java:261) -       at
> >>>>>
> >>>>>
> org.apache.hadoop.hbase.HBaseConfiguration.<init>(HBaseConfiguration.java:44)
> >>>>> INFO [2011-02-17 06:52:23] (ExecUtil.java:261) -       at
> >>>>>
> >>>>>
> org.apache.hadoop.hbase.HBaseConfiguration.<init>(HBaseConfiguration.java:56)
> >>>>>
> >>>>> I looked at Configuration.java which has quiet mode setter. But the
> >>>>> above
> >>>>> exception happened in ctor.
> >>>>>
> >>>>> Please advise how I can troubleshoot this.
> >>>>>
> >>>>
> >>>>
> >>>>
> >>>> --
> >>>> Todd Lipcon
> >>>> Software Engineer, Cloudera
> >>>>
> >>>
> >>>
> >>
> >>
> >> --
> >> Todd Lipcon
> >> Software Engineer, Cloudera
> >>
> >
> >
>


-- 
Todd Lipcon
Software Engineer, Cloudera

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