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Avro >> mail # user >> version of avro

Koert Kuipers 2012-10-19, 20:03
Ken Krugler 2012-10-19, 20:16
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RE: version of avro

Yes I have CDH4 working happily with Avro 1.7.0 following the process described below.
The various methods of distributing the Avro jar are discussed in http://www.cloudera.com/blog/2011/01/how-to-include-third-party-libraries-in-your-map-reduce-job. I could not distribute the newer Avro jar via methods 1 and 2 because of classpath issues (discussed in AVRO-1103) so settled for the not so satisfactory option 3.
The latest version of Avro has a patch for AVRO-1103 and a Maven profile to compile against the newer versions of Hadoop. I have not tried upgrading yet, but you should definitely try this first before going down the self patching route.

Subject: Re: version of avro
Date: Fri, 19 Oct 2012 13:16:24 -0700
On Oct 19, 2012, at 1:03pm, Koert Kuipers wrote:i noticed avro version 1.5.4 is included with some version/distros of hadoop and hive... is there a reason why 1.5.4 is included specifically and not newer ones? are there some incompatibilities to be aware of? i would like to use a newer version

In the mail archives there was a discussion back in July about using Avro 1.7 with CHD4. where Jacob Metcalf said:
Avro 17 is compiled against Hadoop 1 i.e. CDH3.

I have it running aginst CDH4 but I had to patch and recompile Avro, then replace the Avro 153 in the Hadoop lib directory with 17. I have attached my patch against JIRA AVRO-1103 for consideration.

It sounds like if you're using CDH3/Hadoop 1.0 then you should be able to use Avro 1.7 as-is, but I haven't tried this myself.
-- Ken

--------------------------------------------http://about.me/kkrugler+1 530-210-6378
Koert Kuipers 2012-10-20, 16:27