correction:

 many of which use unallocated protobuf,


I meant unrelocated.

On Mon, Oct 7, 2024 at 9:37 AM Istvan Toth <st...@cloudera.com> wrote:

> Unfortunately Protobuf has made the decision of breaking binary
> compatibility between the frequently changing major versions,
> creating a Guava-like problem.
>
> Since Omid (or rather HBase/Phoenix) is frequently used together with
> other Hadoop-adjacent software depending on Protobuf, many of which use
> unallocated protobuf,
> we need to solve this somehow.
>
> To avoid adding another repo, we could add protobuf to the existing
> phoenix-thirdparty repo, since Omid is a Phoenix subproject now.
>
> Istvan
>
> On Wed, Oct 2, 2024 at 1:51 PM Villő Szűcs <szucsvi...@cloudera.com.invalid>
> wrote:
>
>> Hey all,
>> I've been working on OMID-284 and OMID-276, specifically attempting to
>> upgrade Protobuf in OMID, and I've encountered several challenges that I
>> want to bring to the community for discussion.
>>
>> I tried upgrading Protobuf to version 4.28.2: see PR #170
>> <https://github.com/apache/phoenix-omid/pull/170>. The primary motivation
>> for using this version was to align with hbase-thirdparty, which also uses
>> Protobuf 4. However, during testing, I encountered the following failure:
>>
>> java.lang.NoSuchMethodError:org.apache.hadoop.hdfs.server.namenode.FsImageProto$FileSummary.makeExtensionsImmutable()V
>> This error suggests that Hadoop is still using an older version of
>> Protobuf, and this is causing compatibility issues.
>> I also tried using Protobuf version 3.25.5, and it worked without any test
>> failures. However, this is not aligned with the Protobuf version used in
>> hbase-thirdparty, and if we try to fully switch to hbase-thirdparty's
>> shaded Protobuf, we are likely to run into the same issues that I faced
>> with Protobuf 4.
>>
>> To resolve this, my current suggestion is to create a new Omid-thirdparty
>> repository and shade Protobuf there. This would help us isolate OMID's
>> dependencies and avoid any conflicts with Hadoop's older Protobuf version.
>>
>> Do you think creating an Omid-thirdparty repository for shading Protobuf
>> is
>> a viable solution?
>> Are there any other options that might avoid introducing a new repository
>> while still addressing the compatibility issues?
>>
>> Thanks in advance for your input!
>> Best,
>> Villő
>>
>
>
> --
> *István Tóth* | Sr. Staff Software Engineer
> *Email*: st...@cloudera.com
> cloudera.com <https://www.cloudera.com>
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-- 
*István Tóth* | Sr. Staff Software Engineer
*Email*: st...@cloudera.com
cloudera.com <https://www.cloudera.com>
[image: Cloudera] <https://www.cloudera.com/>
[image: Cloudera on Twitter] <https://twitter.com/cloudera> [image:
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