[
https://issues.apache.org/jira/browse/RANGER-3611?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
kirby zhou updated RANGER-3611:
-------------------------------
Description:
A simple Rest API call by CURL will cause uncatched NullPointerException in
logs.
Actual:
curl -v [http://localhost:6080/service/plugins/policies/download/hdfsdev]
< HTTP/1.1 404 Not Found
#### No Message here ####
* Closing connection 0
And logs in catalina.out
{code:java}
EVERE: Servlet.service() for servlet [REST Service] in context with path []
threw exception
java.lang.NullPointerException
at
org.apache.ranger.rest.ServiceREST.getServicePoliciesIfUpdated(ServiceREST.java:3054)
at
org.apache.ranger.rest.ServiceREST$$FastClassBySpringCGLIB$$92dab672.invoke(<generated>)
at
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:779)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750)
at
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123)
at
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388)
at
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750)
at
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:692)
at
org.apache.ranger.rest.ServiceREST$$EnhancerBySpringCGLIB$$43bccb60.getServicePoliciesIfUpdated(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
at
com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
at
com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
at
com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
at
com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at
com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
at
com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at
com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
at
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542)
at
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473)
at
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419)
at
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409)
at
com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409)
at
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558)
at
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:733)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:232)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:167)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:194)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:167)
at
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:204)
at
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:183)
at
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358)
at
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:194)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:167)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:544)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:698)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:364)
at
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:624)
at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:831)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1651)
at
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
{code}
Expected:
curl -v
[http://localhost:6080/service/plugins/policies/download/hdfsdev?lastKnownVersion=-1]
< HTTP/1.1 404 Not Found
"RANGER_ERROR_SERVICE_NOT_FOUND: ServiceName=hdfsdev"
* Closing connection 0
Simple Fix: change from first to second fragment in method
org.apache.ranger.rest.ServiceREST::getServicePoliciesIfUpdated(...)
{code:java}
if (isValid) {
if (lastKnownVersion == null) {
lastKnownVersion = Long.valueOf(-1);
}
{code}
{code:java}
if (lastKnownVersion == null) {
lastKnownVersion = Long.valueOf(-1);
}
if (isValid) { {code}
was:
A simple Rest API call by CURL will cause uncatched NullPointerException in
logs.
Actual:
curl -v [http://localhost:6080/service/plugins/policies/download/hdfsdev]
< HTTP/1.1 404 Not Found
#### NO Message ####
* Closing connection 0
And logs in catalina.out
{code:java}
EVERE: Servlet.service() for servlet [REST Service] in context with path []
threw exception
java.lang.NullPointerException
at
org.apache.ranger.rest.ServiceREST.getServicePoliciesIfUpdated(ServiceREST.java:3054)
at
org.apache.ranger.rest.ServiceREST$$FastClassBySpringCGLIB$$92dab672.invoke(<generated>)
at
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:779)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750)
at
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123)
at
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388)
at
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750)
at
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:692)
at
org.apache.ranger.rest.ServiceREST$$EnhancerBySpringCGLIB$$43bccb60.getServicePoliciesIfUpdated(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
at
com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
at
com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
at
com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
at
com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at
com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
at
com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at
com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
at
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542)
at
com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473)
at
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419)
at
com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409)
at
com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409)
at
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558)
at
com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:733)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:232)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:167)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:194)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:167)
at
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:204)
at
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:183)
at
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358)
at
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:194)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:167)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:544)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:698)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:364)
at
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:624)
at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:831)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1651)
at
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
{code}
Expected:
curl -v
[http://localhost:6080/service/plugins/policies/download/hdfsdev?lastKnownVersion=-1]
< HTTP/1.1 404 Not Found
"RANGER_ERROR_SERVICE_NOT_FOUND: ServiceName=hdfsdev"
* Closing connection 0
Simple Fix: change from first to second fragment in method
org.apache.ranger.rest.ServiceREST::getServicePoliciesIfUpdated(...)
{code:java}
if (isValid) {
if (lastKnownVersion == null) {
lastKnownVersion = Long.valueOf(-1);
}
{code}
{code:java}
if (lastKnownVersion == null) {
lastKnownVersion = Long.valueOf(-1);
}
if (isValid) { {code}
> Uncatched NullPointerException when missing lastKnownVersion in
> ServiceREST::getServicePoliciesIfUpdated
> --------------------------------------------------------------------------------------------------------
>
> Key: RANGER-3611
> URL: https://issues.apache.org/jira/browse/RANGER-3611
> Project: Ranger
> Issue Type: Bug
> Components: admin
> Affects Versions: 2.2.0, 2.3.0
> Reporter: kirby zhou
> Priority: Minor
> Attachments: 0001-fix-NullPtrException-in-API-policies-download.patch
>
>
> A simple Rest API call by CURL will cause uncatched NullPointerException in
> logs.
> Actual:
> curl -v [http://localhost:6080/service/plugins/policies/download/hdfsdev]
> < HTTP/1.1 404 Not Found
> #### No Message here ####
> * Closing connection 0
> And logs in catalina.out
>
> {code:java}
> EVERE: Servlet.service() for servlet [REST Service] in context with path []
> threw exception
> java.lang.NullPointerException
> at
> org.apache.ranger.rest.ServiceREST.getServicePoliciesIfUpdated(ServiceREST.java:3054)
> at
> org.apache.ranger.rest.ServiceREST$$FastClassBySpringCGLIB$$92dab672.invoke(<generated>)
> at
> org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
> at
> org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:779)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
> at
> org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750)
> at
> org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123)
> at
> org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388)
> at
> org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
> at
> org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750)
> at
> org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:692)
> at
> org.apache.ranger.rest.ServiceREST$$EnhancerBySpringCGLIB$$43bccb60.getServicePoliciesIfUpdated(<generated>)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
> at
> com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
> at
> com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
> at
> com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
> at
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
> at
> com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
> at
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
> at
> com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409)
> at
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:733)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:232)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:167)
> at
> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:194)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:167)
> at
> org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:204)
> at
> org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:183)
> at
> org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358)
> at
> org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:194)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:167)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
> at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:544)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
> at
> org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:698)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:364)
> at
> org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:624)
> at
> org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
> at
> org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:831)
> at
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1651)
> at
> org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at
> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
> at java.lang.Thread.run(Thread.java:748)
> {code}
>
> Expected:
> curl -v
> [http://localhost:6080/service/plugins/policies/download/hdfsdev?lastKnownVersion=-1]
>
> < HTTP/1.1 404 Not Found
> "RANGER_ERROR_SERVICE_NOT_FOUND: ServiceName=hdfsdev"
> * Closing connection 0
>
>
> Simple Fix: change from first to second fragment in method
> org.apache.ranger.rest.ServiceREST::getServicePoliciesIfUpdated(...)
> {code:java}
> if (isValid) {
> if (lastKnownVersion == null) {
> lastKnownVersion = Long.valueOf(-1);
> }
> {code}
> {code:java}
> if (lastKnownVersion == null) {
> lastKnownVersion = Long.valueOf(-1);
> }
> if (isValid) { {code}
>
>
>
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