apache zookeeper - Solr cloud client 5.3.1 Timeout Exception while using with spring hibernate transaction -


i connecting solr index database entries getting spring hibernate transaction. facing below exception. 

 error while calling watcher  java.lang.classcastexception: java.util.hashmap cannot cast java.lang.string     @ org.apache.solr.common.util.executorutil$mdcawarethreadpoolexecutor.execute(executorutil.java:173)     @ java.util.concurrent.abstractexecutorservice.submit(abstractexecutorservice.java:110)     @ org.apache.solr.common.cloud.solrzkclient$3.process(solrzkclient.java:261)     @ org.apache.zookeeper.clientcnxn$eventthread.processevent(clientcnxn.java:522)     @ org.apache.zookeeper.clientcnxn$eventthread.run(clientcnxn.java:498)    org.apache.solr.common.solrexception: java.util.concurrent.timeoutexception: not connect zookeeper x.x.x.x:8000 within 10000 ms     @ org.apache.solr.common.cloud.solrzkclient.(solrzkclient.java:181)     @ org.apache.solr.common.cloud.solrzkclient.(solrzkclient.java:115)     @ org.apache.solr.common.cloud.solrzkclient.(solrzkclient.java:105)     @ org.apache.solr.common.cloud.zkstatereader.(zkstatereader.java:207)     @ org.apache.solr.client.solrj.impl.cloudsolrclient.connect(cloudsolrclient.java:465)     @ org.apache.solr.client.solrj.impl.cloudsolrclient.requestwithretryonstalestate(cloudsolrclient.java:822)     @ org.apache.solr.client.solrj.impl.cloudsolrclient.request(cloudsolrclient.java:805)     @ org.apache.solr.client.solrj.solrrequest.process(solrrequest.java:135)     @ org.apache.solr.client.solrj.solrclient.add(solrclient.java:107)     @ org.apache.solr.client.solrj.solrclient.add(solrclient.java:72)     @ org.apache.solr.client.solrj.solrclient.add(solrclient.java:86)   cloudsolrclient cloudsolrclient = null; transactionstatus transactionstatus = null; list leveldefinitions = new linkedlist(); try {     defaulttransactiondefinition transactiondefinition = new defaulttransactiondefinition();     transactionstatus = gettransactionmanager().gettransaction(transactiondefinition);      //database query      cloudsolrclient = new cloudsolrclient("x.x.x.x:8000");      cloudsolrclient.setdefaultcollection("cmd_oustr_new_dev");     solrinputdocument solrinputdocument = new solrinputdocument();       //field setting of solrinputdocument       linkedlist solrinputdocuments = new linkedlist();     solrinputdocuments.add(solrinputdocument);      cloudsolrclient.add(solrinputdocuments);      cloudsolrclient.commit();      gettransactionmanager().commit(transactionstatus);

note: same solr code working if spring hibernate transaction not getting opened in thread.

issue resolved

the issue due incompatible log4j implementation mdc inside activemq jar version 5.8 , using mdc transaction logging. putting map transaction info excecutorutil(line 172) of solrj jar casting string getting submitter context.

replaced jar 5.10 version. working


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