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https://issues.apache.org/jira/browse/HBASE-13001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14327057#comment-14327057
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Vikas Vishwakarma commented on HBASE-13001:
-------------------------------------------
This looks like a missing null check issue in the following lines for fqtn
{noformat}
String fqtn = request.getParameter("name");
HTable table = (HTable) master.getConnection().getTable(fqtn)
{noformat}
I have handled it in the following manner
{noformat}
if (fqtn != null) {
HTable table = (HTable) master.getConnection().getTable(fqtn)
+ populate all other fqtn and table dependent parameters
+ existing page loading methods
} else {
Load an empty page with the message "Table not ready"
redirect back to the main page after timeout
}
{noformat}
I deployed and tested the changes locally and looks to be working fine
To test the fix, I set fqtn explicitly to null in the code and verified the
page loaded by clicking on a table details page (snapshot attached)
It will show Table not ready for 5 secs and automatically redirect back to the
main page
> NullPointer in master logs for table.jsp
> ----------------------------------------
>
> Key: HBASE-13001
> URL: https://issues.apache.org/jira/browse/HBASE-13001
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.10
> Reporter: Vikas Vishwakarma
> Assignee: Vikas Vishwakarma
> Priority: Trivial
> Attachments: HBASE-13001.patch
>
>
> Seeing a NullPointer issue in master logs for table.jsp probably similar to
> HBASE-6607
> {noformat}
> 2015-02-09 14:04:00,622 ERROR org.mortbay.log: /table.jsp
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.generated.master.table_jsp._jspService(table_jsp.java:71)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
> at
> org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:109)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.apache.hadoop.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:1087)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
> at
> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
> at
> org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at org.mortbay.jetty.Server.handle(Server.java:326)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
> at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
> {noformat}
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