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https://issues.apache.org/jira/browse/KYLIN-2104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15584255#comment-15584255
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Richard Calaba commented on KYLIN-2104:
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As I cannot attach too large files here, then you can download the BIN relases
from here:
1) ORIGINAL Kylin 1.5.3 -
https://archive.apache.org/dist/kylin/apache-kylin-1.5.3/apache-kylin-1.5.3-bin.tar.gz
2) My version of Kylin 1.5.3 - gitc lone with tag kylin-1.5.3 and compilation &
packaging from sources - no errors reported -
https://drive.google.com/file/d/0Bz5GkHbD3o7KcFhIUVh2LWhCeDg/view?usp=sharing
> loader constraint violation: loader (instance of
> org/apache/catalina/loader/WebappClassLoader) previously initiated loading
> for a different type with name "com/google/protobuf/ByteString"
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: KYLIN-2104
> URL: https://issues.apache.org/jira/browse/KYLIN-2104
> Project: Kylin
> Issue Type: Bug
> Affects Versions: v1.5.3
> Environment: MapR 4.1 - Edge node
> Reporter: Richard Calaba
> Priority: Critical
>
> Something very odd is with v.1.5.3 compilation & packaging scripts - it seems
> that during compilation some req. library is missing or another version is
> being used and this is not reported as a compilation error which is causing
> issues later in runtime.
> On my MapR 4.1 system - EDGE node which has all necessary access rights for
> hbase/hive + other packaging tools installed I did this:
> 1) Followed the https://kylin.apache.org/development/howto_package.html -
> with one exception - from git I am not clonning latest master branch but
> specific released Kylin version using tag kylin-1.5.3
> 2) The bin package is compiled successfully without any errors being reported
> (I believe test cases are skipped this way - so cannot say test cases run ok)
> 3) I then installed the successfully compiled Kylin 1.5.3 from sources and
> run Kylin - all seems OK.
> 4) I defined and successfully build 2 cubes - no issues during the build
> process. (Maybe except the fact that Cube size is reported to be 0 Kb on UI
> having approx. 350 million rows processed during Build -> that looks more
> like some other bug).
> 5) If I go to Insights tab in Kylin UI and run any query which should return
> some data (350 mil. rows processed during build) I am getting an error:
> a) 1st time I run any query - ERROR: loader constraint violation: loader
> (instance of org/apache/catalina/loader/WebappClassLoader) previously
> initiated loading for a different type with name
> "com/google/protobuf/ByteString"
> b) 2nd and later times - ERROR says only "com/google/protobuf/ByteString"
> 6) If I STOP the Kylin -> replace the whole binary installation with the
> officialy released binary package of Kylin 1.5.3 (for HBase 0.98/0.99) - I
> can run my queries without any issue !!!!
> The reason why I am reporting this bug on v 1.5.3 and not on latest released
> sources 1.5.4.1 is that I have issues to have 1.5.4.1 working - see
> https://issues.apache.org/jira/browse/KYLIN-2094 - Bin release fails in step
> #3 of the Build process and 1.5.4.1 compiled from sources doesn't work for
> me.
> All points to some issues with incorrect dependencies being detected during
> compilation and/or runtime ... maybe related to Google's Protobuffers ...???
> Anyone has any idea how to debug this problem ?? Basically it makes both
> 1.5.3 and 1.5.4.1 not working on my system.
> On different system (also MapR 4.1) few months back -> I didn't have those
> issues -I was able successfully re-compile sources of 1.5.x versions
> including some additional patches relased for them.
> Beacuse no errror is reported during the Kylin compilation & packaging
> process -> all indicates that there is some strange non-resolved dependency
> which was OK on my previous MapR system but is different on my current MapR
> system. Could be anything ...
> I will try to attach the compiled binary package here so some guru can have a
> look and let me know why "successfully" compiled Kylin from sources doesn't
> run same as the original BIN release. (BTW my compiled archive is several 30
> MBs larger than the released binary package ...)
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