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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11118) non environment variable solution for "IllegalAccessError: class com.google.protobuf.ZeroCopyLiteralByteString cannot access its superclass com.google.protobuf.LiteralByteString"
Date Wed, 18 Jun 2014 23:42:25 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14036667#comment-14036667
] 

Enis Soztutar commented on HBASE-11118:
---------------------------------------

bq. Thinking on it more, not generating the rpc/server bindings is a blocker. It would be
mountains of work hand coding something that is now generated hooking up rpc invocation w/
Service call through to server/client
Agreed. 
bq.  It moves HBaseZeroCopyLiteralByteString into hbase-server so it is out of the way of
client dependencies. Means we have the speedup serverside only.  
bq. And it should be out of the way of mr dependencies....
We do not have a module for mapreduce. You mean the MR code should not import the class, hence
it won't be loaded. Sounds good. 
Can we do a util class, which checks whether it can load up ZCLBS and uses it if so, otherwise
defaults to BS.copyFrom()? 

> non environment variable solution for "IllegalAccessError: class com.google.protobuf.ZeroCopyLiteralByteString
cannot access its superclass com.google.protobuf.LiteralByteString"
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-11118
>                 URL: https://issues.apache.org/jira/browse/HBASE-11118
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.98.2
>            Reporter: André Kelpe
>            Priority: Blocker
>             Fix For: 0.99.0
>
>         Attachments: 1118.suggested.undoing.optimization.on.clientside.txt, 1118.suggested.undoing.optimization.on.clientside.txt,
HBASE-11118-0.98.patch.gz, HBASE-11118-trunk.patch.gz, shade_attempt.patch
>
>
> I am running into the problem described in https://issues.apache.org/jira/browse/HBASE-10304,
while trying to use a newer version within cascading.hbase (https://github.com/cascading/cascading.hbase).
> One of the features of cascading.hbase is that you can use it from lingual (http://www.cascading.org/projects/lingual/),
our SQL layer for hadoop. lingual has a notion of providers, which are fat jars that we pull
down dynamically at runtime. Those jars give users the ability to talk to any system or format
from SQL. They are added to the classpath  programmatically before we submit jobs to a hadoop
cluster.
> Since lingual does not know upfront , which providers are going to be used in a given
run, the HADOOP_CLASSPATH trick proposed in the JIRA above is really clunky and breaks the
ease of use we had before. No other provider requires this right now.
> It would be great to have a programmatical way to fix this, when using fat jars.



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