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https://issues.apache.org/jira/browse/SOLR-6385?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14108283#comment-14108283
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Erick Erickson commented on SOLR-6385:
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https://issues.apache.org/jira/browse/SOLR-445
> Strange behavior on indexing document with wrong date format
> ------------------------------------------------------------
>
> Key: SOLR-6385
> URL: https://issues.apache.org/jira/browse/SOLR-6385
> Project: Solr
> Issue Type: Bug
> Components: clients - java
> Affects Versions: 4.7.2
> Environment: Solr server in Windows 7, solrj
> Reporter: Denis Shishlyannikoc
> Priority: Critical
>
> Hello.
> I try to work with solr lately and did not get much experience with it yet,
> so part of problems that I will describe here can be due to lack of knowledge.
> Excuse me for that.
> Problems that I saw:
> 1) I use solj to index collection of SolrInputDocuments.
> To do it I call method add(Collection) of CloudSolrServer object.
> Just for fun I tried to index one of documents with not correct date:
> I took solr valid date value of one of these SolrInputDocuments and changed
> the "T" symbol in it to "K".
> (this date is defined in schema.xml as
> <field name="mydate" type="tdate" indexed="true" stored="true"
> multiValued="false" /> )
> Solr failed to index collection and returned SolrServerException.
> Also what happened above is that part of documents of this SolrInputDocuments
> collection got indexed correctly, problematic date document failed to be
> indexed together with several valid (from all points of view)
> SolrInputDocuments of this collection.
> Looks like solr went through documents in collection, indexing them one by
> one, trowed exception on problematic date document and finally did not index
> all valid documents that were after problematic date document.
> 2) After failure, described in 1), solr kept problematic date document in
> some queue and tried to reindex this document again (attempt per some 3-5
> minutes, did not measure exact time of that), showing same (failed to parse
> date) exception in logs! After solr server restart issue is gone: no more
> tries to reindex problematic date document.
> Questions to be answered
> 1) What is the default behavior of solr on indexing problematic values
> fields?
> For example for date field: I expect solr to index null date (instead of not
> indexing of whole document) and then write some warning to logs and return
> some indication of problem on UpdateResponse.
> Maybe solr behavior on not valid field values should be configurable (defined
> in some xml element in schema).
> 2) While indexing collection of documents, should solr index all valid
> documents (and not return on first problem as it happens now) ?
> If I index collection of documents, I expect solr to index all valid (from
> all points of view) documents and return indexing status on UpdateResponse
> about all not indexed problematic documents.
> 3) Why solr tries to reindex problematic document? Looks like bug that can
> create useless load on server.
> If this behavior is planned by design, then how can I force solr to stop
> reindexing such problem documents (without restarting of solr server)?
> Where can I read about it?
> Thank you.
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