solr dataimport处理程序

Question

我试图在db数据配置中使用jndiName属性。xml。这在tomcat中非常有效。然而，在websphere中存在问题。

引发以下异常

确保J2EE应用程序不会在静态代码块内或该J2EE应用程序创建的线程中对“java:”名称执行JNDI操作。此类代码不一定在服务器应用程序请求的线程上运行，因此“java:”名称上的JNDI操作不支持这些代码。[根异常是javax.naming.NameNotFoundException:在上下文“java:”中找不到名称comp/env/jdbc。”

似乎websphere在从静态代码访问jndi资源时遇到了问题。有人经历过吗？

 DataImporter  E org.apache.solr.common.SolrException log Full Import failed:org.apache.solr.handler.dataimport.DataImportHandlerException: Unable to execute query: <REMOVE SQL from here>
    at org.apache.solr.handler.dataimport.DataImportHandlerException.wrapAndThrow(DataImportHandlerException.java:72)
    at org.apache.solr.handler.dataimport.JdbcDataSource$ResultSetIterator.<init>(JdbcDataSource.java:253)
    at org.apache.solr.handler.dataimport.JdbcDataSource.getData(JdbcDataSource.java:210)
    at org.apache.solr.handler.dataimport.JdbcDataSource.getData(JdbcDataSource.java:39)
    at org.apache.solr.handler.dataimport.SqlEntityProcessor.initQuery(SqlEntityProcessor.java:59)
    at org.apache.solr.handler.dataimport.SqlEntityProcessor.nextRow(SqlEntityProcessor.java:73)
    at org.apache.solr.handler.dataimport.EntityProcessorWrapper.nextRow(EntityProcessorWrapper.java:238)
    at org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:596)
    at org.apache.solr.handler.dataimport.DocBuilder.doFullDump(DocBuilder.java:268)
    at org.apache.solr.handler.dataimport.DocBuilder.execute(DocBuilder.java:187)
    at org.apache.solr.handler.dataimport.DataImporter.doFullImport(DataImporter.java:359)
    at org.apache.solr.handler.dataimport.DataImporter.runCmd(DataImporter.java:427)
    at org.apache.solr.handler.dataimport.DataImporter$1.run(DataImporter.java:408)
Caused by: javax.naming.ConfigurationException: A JNDI operation on a "java:" name cannot be completed because the server runtime is not able to associate the operation's thread with any J2EE application component.  This condition can occur when the JNDI client using the "java:" name is not executed on the thread of a server application request.  Make sure that a J2EE application does not execute JNDI operations on "java:" names within static code blocks or in threads created by that J2EE application.  Such code does not necessarily run on the thread of a server application request and therefore is not supported by JNDI operations on "java:" names. [Root exception is javax.naming.NameNotFoundException: Name comp/env/jdbc not found in context "java:".]
    at com.ibm.ws.naming.java.javaURLContextImpl.throwConfigurationExceptionWithDefaultJavaNS(javaURLContextImpl.java:428)
    at com.ibm.ws.naming.java.javaURLContextImpl.lookup(javaURLContextImpl.java:399)
    at com.ibm.ws.naming.java.javaURLContextRoot.lookup(javaURLContextRoot.java:214)
    at com.ibm.ws.naming.java.javaURLContextRoot.lookup(javaURLContextRoot.java:154)
    at javax.naming.InitialContext.lookup(InitialContext.java:436)
    at org.apache.solr.handler.dataimport.JdbcDataSource$1.call(JdbcDataSource.java:140)
    at org.apache.solr.handler.dataimport.JdbcDataSource$1.call(JdbcDataSource.java:128)
    at org.apache.solr.handler.dataimport.JdbcDataSource.getConnection(JdbcDataSource.java:363)
    at org.apache.solr.handler.dataimport.JdbcDataSource.access$200(JdbcDataSource.java:39)
    at org.apache.solr.handler.dataimport.JdbcDataSource$ResultSetIterator.<init>(JdbcDataSource.java:240)
    ... 11 more
Caused by: javax.naming.NameNotFoundException: Name comp/env/jdbc not found in context "java:".
    at com.ibm.ws.naming.ipbase.NameSpace.getParentCtxInternal(NameSpace.java:1837)
    at com.ibm.ws.naming.ipbase.NameSpace.lookupInternal(NameSpace.java:1166)
    at com.ibm.ws.naming.ipbase.NameSpace.lookup(NameSpace.java:1095)
    at com.ibm.ws.naming.urlbase.UrlContextImpl.lookup(UrlContextImpl.java:1233)
    at com.ibm.ws.naming.java.javaURLContextImpl.lookup(javaURLContextImpl.java:395)
    ... 19 more

Answer 1

Solr在这里使用非托管线程，并在其中一个线程的java：命名空间中进行JNDI查找。这在WebSphere中不受支持，因为WebSphere根据执行查找的线程标识java：命名空间。Tomcat基于线程上下文类加载器执行此操作，这解释了行为上的差异。请注意，J2EE规范不允许非托管线程，因此WebSphere的行为实际上符合标准。