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https://issues.apache.org/jira/browse/SOLR-5762?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13921022#comment-13921022
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Shawn Heisey commented on SOLR-5762:
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bq. SolrJ can always send its version (I mean Lecene/Solr version) for
update/query
That's an interesting notion. It does mean that we are still talking about
adding another parameter, but in this case, there is a beneficial side effect:
By looking at logs, it would be clear what SolrJ version is being used, both to
the user and to those who are trying to help that user.
There would need to be a way to tell SolrJ to use the old format. I don't know
if we're headed for a situation where ANY unknown parameter on a query will
throw an error, but if we are, we'd also need a way to suppress sending the new
version parameter.
> SOLR-5658 broke backward compatibility of Javabin format
> --------------------------------------------------------
>
> Key: SOLR-5762
> URL: https://issues.apache.org/jira/browse/SOLR-5762
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.6.1, 4.7
> Reporter: Noble Paul
> Fix For: 4.7, 4.8, 5.0
>
> Attachments: SOLR-5672.patch, SOLR-5762-test.patch, SOLR-5762.patch,
> updateReq_4_5.bin
>
>
> In SOLR-5658 the docsMap entry was changed from a Map to List<Map> this broke
> back compat of older clients with 4.6.1 and later
> {noformat}
> ERROR - 2014-02-20 21:28:36.332; org.apache.solr.common.SolrException;
> java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to
> java.util.List
> at
> org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec.unmarshal(JavaBinUpdateRequestCodec.java:188)
> at
> org.apache.solr.handler.loader.JavabinLoader.parseAndLoadDocs(JavabinLoader.java:106)
> at
> org.apache.solr.handler.loader.JavabinLoader.load(JavabinLoader.java:58)
> at
> org.apache.solr.handler.UpdateRequestHandler$1.load(UpdateRequestHandler.java:92)
> at
> org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:74)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:1859)
> at
> org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:721)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:417)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:201)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
> at org.eclipse.jetty.server.Server.handle(Server.java:368)
> at
> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
> at
> org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
> at
> org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:953)
> at
> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1014)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:953)
> at
> org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
> at
> org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
> at
> org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:264)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
> at java.lang.Thread.run(Thread.java:744)
> {noformat}
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