no declaration can be found for element 'hdp:tasklet'

**paragflume** · Jul 30th, 2012, 06:18 AM

Hi Friends,

Few days age, I made some spring-hadoop programs and it run well. But today when I tried to run the sames programs I faced same problem in my all previous spring-hadoop programs.

The problem is it shows "no declaration can be found for element 'hdp:tasklet'"

Code:

$ mvn exec:java -Dexec.mainClass=org.springframework.batch.core.launch.support.CommandLineJobRunner -Dexec.args="context.xml secondJob"
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building spring_hadoop_maven_wordcount 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> exec-maven-plugin:1.2.1:java (default-cli) @ spring_hadoop_maven_wordcount >>>
[INFO]
[INFO] <<< exec-maven-plugin:1.2.1:java (default-cli) @ spring_hadoop_maven_wordcount <<<
[INFO]
[INFO] --- exec-maven-plugin:1.2.1:java (default-cli) @ spring_hadoop_maven_wordcount ---
12/07/30 16:40:24 INFO support.ClassPathXmlApplicationContext: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@12a66ea: startup date [Mon Jul 30 16:40:24 IST 2012]; root of context hierarchy
12/07/30 16:40:24 INFO xml.XmlBeanDefinitionReader: Loading XML bean definitions from class path resource [context.xml]
12/07/30 16:40:25 ERROR support.CommandLineJobRunner: Job Terminated in error: Line 32 in XML document from class path resource [context.xml] is invalid; nested exception is org.xml.sax.SAXParseException: cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'hdp:tasklet'.
org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 32 in XML document from class path resource [context.xml] is invalid; nested exception is org.xml.sax.SAXParseException: cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'hdp:tasklet'.
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:396)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:143)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:178)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:149)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:212)
        at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:126)
        at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:92)
        at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:130)
        at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:467)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:397)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
        at org.springframework.batch.core.launch.support.CommandLineJobRunner.start(CommandLineJobRunner.java:282)
        at org.springframework.batch.core.launch.support.CommandLineJobRunner.main(CommandLineJobRunner.java:574)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:297)
        at java.lang.Thread.run(Thread.java:662)
Caused by: org.xml.sax.SAXParseException: cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'hdp:tasklet'.
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(XMLSchemaValidator.java:417)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(XMLSchemaValidator.java:3182)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1927)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:725)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:377)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2756)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
        at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:235)
        at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:284)
        at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:75)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:388)
        ... 21 more

Can you plz find out what is wrong going on ...

**paragflume** · Jul 30th, 2012, 06:24 AM

context.xml is

Code:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:hdp="http://www.springframework.org/schema/hadoop"
        xmlns:p="http://www.springframework.org/schema/p"
        xmlns:batch="http://www.springframework.org/schema/batch"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/hadoop http://www.springframework.org/schema/hadoop/spring-hadoop.xsd
        http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch-2.1.xsd">

        <import resource="applicationContext.xml"/>

        <bean name="firstTasklet" class="org.test.SecondTasklet">
                <property name="message" value="FIRST MESSAGE"/>
        </bean>
        <bean name="secondTasklet" class="org.test.SecondTasklet">
                <property name="message" value="SECOND MESSAGE"/>
        </bean>
        <bean name="thirdTasklet" class="org.test.SecondTasklet">
                <property name="message" value="THIRD MESSAGE"/>
        </bean>
        <bean name="fourthTasklet" class="org.test.SecondTasklet">
                <property name="message" value="FOURTH MESSAGE"/>
        </bean>
        <bean name="fifthTasklet" class="org.test.SecondTasklet">
                <property name="message" value="FIFTH MESSAGE"/>
        </bean>

        <hdp:tasklet id="wordcount-tasklet" job-ref="wordcount-job"/>

        <hdp:tasklet id="wordcount-tasklet2" job-ref="wordcount-job2"/>

        <hdp:tasklet id="wordcount-tasklet3" job-ref="wordcount-job3"/>

        <batch:job id="secondJob" job-repository="jobRepository">

                <batch:step id="firstJobStep">
                        <batch:tasklet ref="firstTasklet" />
                </batch:step>

                <batch:step id="firstJobStep" next="secondJobStep">
                        <batch:tasklet ref="firstTasklet" />
                </batch:step>
                <batch:step id="secondJobStep" next="thirdJobStep">
                        <batch:tasklet ref="secondTasklet" />
                </batch:step>
                <batch:step id="thirdJobStep" next="fourthJobStep">
                        <batch:tasklet ref="thirdTasklet" />
                </batch:step>
                <batch:step id="fourthJobStep" next="fifthJobStep">
                        <batch:tasklet ref="fourthTasklet" />
                </batch:step>
                <batch:step id="fifthJobStep" next="sixthJobStep" >
                        <batch:tasklet ref="fifthTasklet" />
                </batch:step>
                <batch:step id="sixthJobStep" next="seventhJobStep">
                        <batch:tasklet ref="wordcount-tasklet" />
                </batch:step>
                <batch:step id="seventhJobStep" next="eighthJobStep">
                        <batch:tasklet ref="wordcount-tasklet2" />
                </batch:step>

                <batch:step id="eighthJobStep">
                        <batch:tasklet ref="wordcount-tasklet3" />
                </batch:step>

        </batch:job>

        <bean id="message"      class="org.test.Message"/>

        <context:property-placeholder location="hadoop.properties"/>

        <hdp:configuration>
                fs.default.name=${hd.fs}
        </hdp:configuration>

        <hdp:job id="wordcount-job" validate-paths="false"
            input-path="/user/test1/licence" output-path="/user/test2/output_4"
                mapper="org.test.FirstMapReduce.FirstMaper"
                reducer="org.test.FirstMapReduce.FirstReducer"/>

        <hdp:job id="wordcount-job2" validate-paths="false"
            input-path="/user/test1/licence" output-path="/user/test2/output_5"
                mapper="org.test.FirstMapReduce.FirstMaper"
                reducer="org.test.FirstMapReduce.FirstReducer"/>

        <hdp:job id="wordcount-job3" validate-paths="false"
            input-path="/user/test1/licence" output-path="/user/test2/output_6"
                mapper="org.test.FirstMapReduce.FirstMaper"
                reducer="org.test.FirstMapReduce.FirstReducer"/>
</beans>

**Costin Leau** · Jul 31st, 2012, 01:06 AM

Take a look at the namespace - tasklet was renamed to job-tasklet to align it with the rest of the tasklet definitions.
In the future, if you encounter XML problems, just look at the backing XSD.

**paragflume** · Jul 31st, 2012, 03:21 AM

Hi Costin,
Thank for the reply... It solved the problem ..

**linuxmank** · Jan 30th, 2013, 07:01 AM

Hi Costin,

I am stuck with similar kind of problem.
Though I have checked the XSD and it does contain the element "tasklet" in spring batch and hadoop

Below is out configuration xml

Code:

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:beans="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:hdp="http://www.springframework.org/schema/hadoop"
	xmlns:batch="http://www.springframework.org/schema/batch"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
	http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch.xsd
	http://www.springframework.org/schema/hadoop http://www.springframework.org/schema/hadoop/spring-hadoop.xsd">
	



<!-- <beans:import resource="applicationContext.xml" />
<beans:import resource="hadoopJobs.xml" /> -->



	<batch:job id="helloWorldJob6" job-repository="jobRepository">

		<batch:step id="step1" next="decision">
			<batch:tasklet ref="helloWorldTasklet1" />
		</batch:step>

		<batch:decision id="decision" decider="decider">
			<batch:next on="JUMP" to="step2" />
			<batch:next on="NOJUMP" to="mrjob" />
		</batch:decision>

		<batch:step id="step2">
			<batch:tasklet ref="helloWorldTasklet2" />
		</batch:step>

<!-- 		<batch:step id="step3">
			<batch:tasklet ref="helloWorldTasklet3" />
		</batch:step> -->
	
		<batch:step id="mrjob">
		<batch:tasklet ref="hadoop-tasklet" />
		</batch:step>
	</batch:job>
	
	
		<beans:bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <beans:property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <beans:property name="url" value="jdbc:mysql://127.0.0.1:3306/springbatch?createDatabaseIfNotExist=true"/>
        <beans:property name="username" value="root"/>
        <beans:property name="password" value="windows18$"/>
</beans:bean>
	
	
	<beans:bean name="helloWorldTasklet1" class="org.abhi.springBatch.exmaples.helloworld.HelloWorld1" />
	<beans:bean name="helloWorldTasklet2" class="org.abhi.springBatch.exmaples.helloworld.HelloWorld2" />
	<beans:bean name="helloWorldTasklet3" class="org.abhi.springBatch.exmaples.helloworld.HelloWorld3" />
	<beans:bean id="decider" class="org.abhi.springBatch.exmaples.helloworld.HelloWorldDecider"/>

<beans:bean id="jobRepository"
    class="org.springframework.batch.core.repository.support.JobRepositoryFactoryBean">
        <beans:property name="dataSource" ref="dataSource"/>
    <beans:property name="transactionManager" ref="transactionManager" />
</beans:bean>


	<beans:bean id="jobLauncher"
		class="org.springframework.batch.core.launch.support.SimpleJobLauncher">
		<beans:property name="jobRepository" ref="jobRepository" />
	</beans:bean>

	<beans:bean id="transactionManager"
		class="org.springframework.batch.support.transaction.ResourcelessTransactionManager" />
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		<context:property-placeholder location="hadoop.properties"/>

 <hdp:configuration>
 fs.default.name=${hd.fs}
 mapred.job.tracker=${hd.jobtracker}
</hdp:configuration>
	
<hdp:job id="mr-job" scope="step"
	     input-path="${mapper.input.directory}" 
	     output-path="${reducer.output.directory}" 
		 mapper="org.my.mapper.MovieDetailsMappers"
		 reducer="org.my.reducer.MovieDetailsReducerSix"/>
		 
		 <!-- <hdp:cache create-symlink="true">
			<hdp:cache value="/user/testdata/u.item" />
			<hdp:cache value="/user/testdata/u.user" />
		</hdp:cache> -->

	<!-- <hdp:tasklet id="hadoop-tasklet" job-ref="mr-job" wait-for-job="true" /> -->
	
	<hdp:tasklet id="hadoop-tasklet"/>
	

	



	<!-- To run the job from the command line type the following: mvn exec:java 
		-Dexec.mainClass=org.springframework.batch.core.launch.support.CommandLineJobRunner 
		-Dexec.args="simpleJob.xml helloWorldJob" -->
</beans:beans>

Below mentioned is the error we are getting

Code:

 INFO xml.XmlBeanDefinitionReader: Loading XML bean definitions from class path resource [workflow.xml]
13/01/30 18:17:52 ERROR support.CommandLineJobRunner: Job Terminated in error: Line 106 in XML document from class path resource [workflow.xml] is invalid; nested exception is org.xml.sax.SAXParseException: cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'hdp:tasklet'.
org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 106 in XML document from class path resource [workflow.xml] is invalid; nested exception is org.xml.sax.SAXParseException: cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'hdp:tasklet'.
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:396)
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)
	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)
	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:243)
	at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:127)
	at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:93)
	at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:131)
	at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:527)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:441)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
	at org.springframework.batch.core.launch.support.CommandLineJobRunner.start(CommandLineJobRunner.java:282)
	at org.springframework.batch.core.launch.support.CommandLineJobRunner.main(CommandLineJobRunner.java:574)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:297)
	at java.lang.Thread.run(Thread.java:619)
Caused by: org.xml.sax.SAXParseException: cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'hdp:tasklet'.
	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(XMLSchemaValidator.java:417)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(XMLSchemaValidator.java:3181)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1926)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(XMLSchemaValidator.java:725)
	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:377)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2755)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
	at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:235)
	at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:284)
	at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:75)
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:388)
	... 21 more

Please help,

Thanks in advance

**Costin Leau** · Jan 30th, 2013, 12:46 PM

Try job-tasklet - tasklet was renamed in RC1 to make it consistent with the rest of the tasklet definitions.

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