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https://issues.apache.org/jira/browse/HDFS-14883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tao Li resolved HDFS-14883.
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Resolution: Duplicate
> NPE when the second SNN is starting
> -----------------------------------
>
> Key: HDFS-14883
> URL: https://issues.apache.org/jira/browse/HDFS-14883
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.1.1
> Reporter: Ranith Sardar
> Assignee: Ranith Sardar
> Priority: Major
> Labels: multi-sbnn
> Fix For: 3.4.0, 3.3.1, 2.10.1, 3.2.2
>
>
>
> {{| WARN | qtp79782883-47 | /imagetransfer | ServletHandler.java:632
> java.io.IOException: PutImage failed. java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.ImageServlet.validateRequest(ImageServlet.java:198)
> at
> org.apache.hadoop.hdfs.server.namenode.ImageServlet.doPut(ImageServlet.java:485)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
> at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:848)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1772)
> at
> org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:644)}}
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