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https://issues.apache.org/jira/browse/SOLR-3852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13756855#comment-13756855
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ASF subversion and git services commented on SOLR-3852:
-------------------------------------------------------
Commit 1519779 from [email protected] in branch 'dev/branches/branch_4x'
[ https://svn.apache.org/r1519779 ]
SOLR-3852: Fixed ZookeeperInfoServlet so that the SolrCloud Admin UI pages will
work even if ZK contains nodes with data which are not utf8 text (merge
r1519763)
> Admin UI - Cloud Tree ArrayIndexOutOfBoundsException if binary files anywhere
> in ZK tree
> ----------------------------------------------------------------------------------------
>
> Key: SOLR-3852
> URL: https://issues.apache.org/jira/browse/SOLR-3852
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.0-BETA
> Environment: Tomcat 6, external zookeeper-3.3.5
> Reporter: Vadim Kisselmann
> Attachments: SOLR-3852.patch
>
>
> Original bug description indicated that when using Solr with embedded ZK
> everything was fine, but with an external ZK you'd get an
> ArrayIndexOutOfBoundsException.
> Crux of the problem is some bad assumptions about any ZK node containing data
> -- the ZookeeperInfoServlet powering the tree view of the Cloud Admin UI
> assumed that any data would be utf8 text.
> If you are using extenral ZK, and other systems are writing data into ZK,
> then you are more likely to see this problem, because those other systems
> might be writing binary data in to ZK nodes -- if you are using ZK embedded
> in solr, or using solr with it's own private (external) ZK instance, then you
> would only see this problem if you explicitly put binary files into solr
> configs and upconfig them into ZK.
> ----
> One workarround for people encountering this problem when using Solr with a
> ZK instance shared by other tools is to make sure you use a "chroot" patch
> when pointing Solr at ZK, so that it won't know about any other paths in your
> ZK tree that might have binary data...
> https://wiki.apache.org/solr/SolrCloud#Zookeeper_chroot
> If you are having this problem because you put binay files into your own
> config dir (ie: images for velocity or something like that) then there is no
> straight forward workarround.
> Example stack trace for this bug...
> {noformat}
> 43242 [qtp965223859-14] WARN org.eclipse.jetty.servlet.ServletHandler
> /solr/zookeeper
> java.lang.ArrayIndexOutOfBoundsException: 213
> at
> org.apache.lucene.util.UnicodeUtil.UTF8toUTF16(UnicodeUtil.java:620)
> at org.apache.lucene.util.BytesRef.utf8ToString(BytesRef.java:168)
> at
> org.apache.solr.servlet.ZookeeperInfoServlet$ZKPrinter.printTree(ZookeeperInfoServlet.java:303)
> at
> org.apache.solr.servlet.ZookeeperInfoServlet$ZKPrinter.printTree(ZookeeperInfoServlet.java:339)
> at
> org.apache.solr.servlet.ZookeeperInfoServlet$ZKPrinter.printTree(ZookeeperInfoServlet.java:339)
> ...
> org.apache.solr.servlet.ZookeeperInfoServlet$ZKPrinter.print(ZookeeperInfoServlet.java:228)
> at
> org.apache.solr.servlet.ZookeeperInfoServlet.doGet(ZookeeperInfoServlet.java:106)
> {noformat}
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