This is the same error I reported one hour earlier here at the list.
Von: Joe Doupnik <j...@netlab1.net>
Antworten an: "solr-user@lucene.apache.org" <solr-user@lucene.apache.org>
Datum: Donnerstag, 20. August 2020 um 15:09
An: "solr-user@lucene.apache.org" <solr-user@lucene.apache.org>
Betreff: Solr v8.6.x fails with multipart MIME in commands
Where as this works with Solr v8.5.0, on v8.6.0 and 8.6.1, operations fail
when Solr encounters multipart mime formatted commands used with POST. Commands
are being issued by PHP v5 and v7 programs. A PHP source program snippet:
[cid:image001.png@01D6770E.2FDD0630]
This produces output of Deleteindex errno=22 and the index is not deleted.
More, when submitting files for indexing. Again error 22 is returned, and
the curl response is "false".
While debugging the root of this is handling multipart mime encoded commands
and the HTTP ERROR 500 message is the tell-tale:
First the generating program part:
[cid:image002.png@01D6770E.2FDD0630]
Then the wireshark analysis of the exchange. A piece of the update/extract
request packet showing MIME parts:
[cid:image003.png@01D6770E.2FDD0630]
Below is what the 500 Server Error packet contains:
[cid:image004.png@01D6770E.2FDD0630]
...
In this file submission case the file is actually submitted and indexed,
but the server's response is failure with error code 22.
Again, one key to this puzzle is that NoClassDefFoundError for MultiParts. The
java code for that area differs dramatically between Solr 8.5 and 8.6.
Thanks,
Joe D.
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