[SOLR-7536] adding fields to newly created managed-schema could sometimes cause error

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Steven Rowe
• Reporter: Zilo Zongh
• Created: 13/May/15 01:04
• Updated: 08/Jun/18 19:12

Description

When using managed schema in SolrCloud, adding fields into schema would SOMETIMES end up prompting "Can't find resource 'schema.xml' in classpath or '/configs/collectionName', cwd=/export/solr/solr-5.1.0/server", there is of course no schema.xml in configs, but 'schema.xml.bak' and 'managed-schema'

Code to upload configs and create collection:

Path tempPath = getConfigPath();
client.uploadConfig(tempPath, name); //customized configs with solrconfig.xml using ManagedIndexSchemaFactory

if(numShards==0)

{ numShards = getNumNodes(client); }

Create request = new CollectionAdminRequest.Create();
request.setCollectionName(name);
request.setNumShards(numShards);
replicationFactor = (replicationFactor==0?DEFAULT_REPLICA_FACTOR:replicationFactor);
request.setReplicationFactor(replicationFactor);
request.setMaxShardsPerNode(maxShardsPerNode==0?replicationFactor:maxShardsPerNode);
CollectionAdminResponse response = request.process(client);

adding fields to schema, either by curl or by httpclient, would sometimes yield the following error, but the error can be fixed by RELOADING the newly created collection once or several times:

INFO - [{ "responseHeader":

{ "status":500, "QTime":5}

, "errors":["Error reading input String Can't find resource 'schema.xml' in classpath or '/configs/collectionName', cwd=/export/solr/solr-5.1.0/server"], "error":{ "msg":"Can't find resource 'schema.xml' in classpath or '/configs/collectionName', cwd=/export/solr/solr-5.1.0/server", "trace":"java.io.IOException: Can't find resource 'schema.xml' in classpath or '/configs/collectionName', cwd=/export/solr/solr-5.1.0/server

at org.apache.solr.cloud.ZkSolrResourceLoader.openResource(ZkSolrResourceLoader.java:98)
at org.apache.solr.schema.SchemaManager.getFreshManagedSchema(SchemaManager.java:421)
at org.apache.solr.schema.SchemaManager.doOperations(SchemaManager.java:104)
at org.apache.solr.schema.SchemaManager.performOperations(SchemaManager.java:94)
at org.apache.solr.handler.SchemaHandler.handleRequestBody(SchemaHandler.java:57)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1984)
at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:829)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:446)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:220)
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:861)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
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:745)\n", "code":500}}]