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https://issues.apache.org/jira/browse/HADOOP-14841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16155709#comment-16155709
]
Wei-Chiu Chuang commented on HADOOP-14841:
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bq. Intentionally reproducing this on a KMS is pretty difficult, but I was able
to reproduce it if by setting kms max threads to 1 and script-generating some
loads (with the old tomcat version).
Hi [~xiaochen] would you like to also share the script and the reproduction
steps? I share the same concern with [~shahrs87] that it wasn't clear whether
it is a client-side or server-side bug. That said, the same error can be seen
when you send a POST request to KMS with _empty_ body. (A POST request with
malformed body has a different error)
[~shahrs87] to give a bit more context, we saw this error during stress tests
and on some busy clusters, and the error seems to go away when we added more
KMS instances to the cluster for load balancing.
> Let KMS Client retry 'No content to map' EOFExceptions
> ------------------------------------------------------
>
> Key: HADOOP-14841
> URL: https://issues.apache.org/jira/browse/HADOOP-14841
> Project: Hadoop Common
> Issue Type: Improvement
> Components: kms
> Affects Versions: 2.6.0
> Reporter: Xiao Chen
> Assignee: Xiao Chen
> Attachments: HADOOP-14841.01.patch
>
>
> We have seen quite some occurrences when the KMS server is stressed, some of
> the requests would end up getting a 500 return code, with this in the server
> log:
> {noformat}
> 2017-08-31 06:45:33,021 WARN org.apache.hadoop.crypto.key.kms.server.KMS:
> User impala/HOSTNAME@REALM (auth:KERBEROS) request POST
> https://HOSTNAME:16000/kms/v1/keyversion/MNHDKEdWtZWM4vPb0p2bw544vdSRB2gy7APAQURcZns/_eek?eek_op=decrypt
> caused exception.
> java.io.EOFException: No content to map to Object due to end of input
> at
> org.codehaus.jackson.map.ObjectMapper._initForReading(ObjectMapper.java:2444)
> at
> org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2396)
> at
> org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1648)
> at
> org.apache.hadoop.crypto.key.kms.server.KMSJSONReader.readFrom(KMSJSONReader.java:54)
> at
> com.sun.jersey.spi.container.ContainerRequest.getEntity(ContainerRequest.java:474)
> at
> com.sun.jersey.server.impl.model.method.dispatch.EntityParamDispatchProvider$EntityInjectable.getValue(EntityParamDispatchProvider.java:123)
> at
> com.sun.jersey.server.impl.inject.InjectableValuesProvider.getInjectableValues(InjectableValuesProvider.java:46)
> at
> com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$EntityParamInInvoker.getParams(AbstractResourceMethodDispatchProvider.java:153)
> at
> com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:203)
> 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:288)
> 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:1469)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
> at
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> org.apache.hadoop.crypto.key.kms.server.KMSMDCFilter.doFilter(KMSMDCFilter.java:84)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:631)
> at
> org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticationFilter.doFilter(DelegationTokenAuthenticationFilter.java:301)
> at
> org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:579)
> at
> org.apache.hadoop.crypto.key.kms.server.KMSAuthenticationFilter.doFilter(KMSAuthenticationFilter.java:130)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:610)
> at
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:503)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
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