Shawn Heisey created SOLR-8070:
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Summary: Implement "fail early/loud" for SolrCloud when schema
does not contain a uniqueKey
Key: SOLR-8070
URL: https://issues.apache.org/jira/browse/SOLR-8070
Project: Solr
Issue Type: Bug
Components: SolrCloud
Affects Versions: 5.2.1
Reporter: Shawn Heisey
Priority: Minor
SolrCloud requires a uniqueKey, but if you don't have one, the behavior can be
a little strange.
A user could make and use single-shard collections just fine, but as soon as
they tried a multi-shard collection, they got a very unhelpful exception. This
is specific to Solr 5.2.1:
{code}
java.lang.NullPointerException
at
org.apache.solr.handler.component.QueryComponent.createMainQuery(QueryComponent.java:849)
at
org.apache.solr.handler.component.QueryComponent.regularDistributedProcess(QueryComponent.java:713)
at
org.apache.solr.handler.component.QueryComponent.distributedProcess(QueryComponent.java:666)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:305)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2064)
at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:450)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:227)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:196)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
at
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at
org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
{code}
At the very least, this point in the code should give a helpful error message
when uniqueKey is missing ... but ideally, creating collections with no
uniqueKey would fail.
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