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https://issues.apache.org/jira/browse/SOLR-7748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14612343#comment-14612343
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Hoss Man edited comment on SOLR-7748 at 7/2/15 6:39 PM:
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bq. With this patch, we have a way to also detect particular build versions and
block them if we know they are bad. I don't think the blocking j9 entirely is a
good solution though, and definitely the script currently doesn't explicitly
block j9, it just fails with a wrong flag passed error.
+1
wether the script should explicitly fail/warn "IBM J9 is known to have problems
running Solr" on startup is a question that should be discussed/answered in
it's own issue -- it certainly makes sense to me to go ahead and fix the script
to not fail in a weird and confusing way just -because your're- (edit) *by the
coincidence of* _trying_ to use J9.
(by corollary: we IndexWriter tests that give up if you try running on J9
because we know those tests are unreliably on J9, but that doesn't mean the
IndexWriter class itself throws a RuntimeException if you try to instantiate it
on a J9 JVM)
was (Author: hossman):
bq. With this patch, we have a way to also detect particular build versions and
block them if we know they are bad. I don't think the blocking j9 entirely is a
good solution though, and definitely the script currently doesn't explicitly
block j9, it just fails with a wrong flag passed error.
+1
wether the script should explicitly fail/warn "IBM J9 is known to have problems
running Solr" on startup is a question that should be discussed/answered in
it's own issue -- it certainly makes sense to me to go ahead and fix the script
to not fail in a weird and confusing way just because you're _trying_ to use J9.
(by corollary: we IndexWriter tests that give up if you try running on J9
because we know those tests are unreliably on J9, but that doesn't mean the
IndexWriter class itself throws a RuntimeException if you try to instantiate it
on a J9 JVM)
> Fix bin/solr to work on IBM J9
> ------------------------------
>
> Key: SOLR-7748
> URL: https://issues.apache.org/jira/browse/SOLR-7748
> Project: Solr
> Issue Type: Bug
> Components: Server
> Reporter: Shai Erera
> Assignee: Shai Erera
> Fix For: 5.3, Trunk
>
> Attachments: solr-7748.patch
>
>
> bin/solr doesn't work on IBM J9 because it sets -Xloggc flag, while J9
> supports -Xverbosegclog. This prevents using bin/solr to start it on J9.
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