Richard Williams created HIVE-10021:
---------------------------------------

             Summary: "Alter index rebuild" statements submitted through 
HiveServer2 fail when Sentry is enabled
                 Key: HIVE-10021
                 URL: https://issues.apache.org/jira/browse/HIVE-10021
             Project: Hive
          Issue Type: Bug
          Components: HiveServer2, Indexing
    Affects Versions: 0.13.1
         Environment: CDH 5.3.2
            Reporter: Richard Williams


When HiveServer2 is configured to authorize submitted queries and statements 
through Sentry, any attempt to issue an "alter index rebuild" statement fails 
with a SemanticException caused by a NullPointerException. This occurs 
regardless of whether the index is a compact or bitmap index. 

The root cause of the problem appears to be the fact that the static 
createRootTask function in org.apache.hadoop.hive.ql.optimizer.IndexUtils 
creates a new 
org.apache.hadoop.hive.ql.Driver object to compile the index builder query, and 
this new Driver object, unlike the one used by HiveServer2 to compile the 
submitted statement, is used without having its "userName" field initialized 
with the submitting user's username. Adding null checks to the Sentry code is 
insufficient to solve this problem, because Sentry needs the userName to 
determine whether or not the submitting user should be able to execute the 
index rebuild statement.

Example stack trace from the HiveServer2 logs:

FAILED: NullPointerException null
java.lang.NullPointerException
        at 
java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333)
        at 
java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:988)
        at org.apache.hadoop.security.Groups.getGroups(Groups.java:161)
        at 
org.apache.sentry.provider.common.HadoopGroupMappingService.getGroups(HadoopGroupMappingService.java:46)
        at 
org.apache.sentry.binding.hive.authz.HiveAuthzBinding.getGroups(HiveAuthzBinding.java:370)
        at 
org.apache.sentry.binding.hive.HiveAuthzBindingHook.postAnalyze(HiveAuthzBindingHook.java:314)
        at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:440)
        at 
org.apache.hadoop.hive.ql.optimizer.IndexUtils.createRootTask(IndexUtils.java:258)
        at 
org.apache.hadoop.hive.ql.index.compact.CompactIndexHandler.getIndexBuilderMapRedTask(CompactIndexHandler.java:149)
        at 
org.apache.hadoop.hive.ql.index.TableBasedIndexHandler.generateIndexBuildTaskList(TableBasedIndexHandler.java:67)
        at 
org.apache.hadoop.hive.ql.parse.DDLSemanticAnalyzer.getIndexBuilderMapRed(DDLSemanticAnalyzer.java:1171)
        at 
org.apache.hadoop.hive.ql.parse.DDLSemanticAnalyzer.analyzeAlterIndexRebuild(DDLSemanticAnalyzer.java:1117)
        at 
org.apache.hadoop.hive.ql.parse.DDLSemanticAnalyzer.analyzeInternal(DDLSemanticAnalyzer.java:410)
        at 
org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:204)
        at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:437)
        at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:335)
        at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1026)
        at org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:1019)
        at 
org.apache.hive.service.cli.operation.SQLOperation.prepare(SQLOperation.java:100)
        at 
org.apache.hive.service.cli.operation.SQLOperation.run(SQLOperation.java:173)
        at 
org.apache.hive.service.cli.session.HiveSessionImpl.runOperationWithLogCapture(HiveSessionImpl.java:715)
        at 
org.apache.hive.service.cli.session.HiveSessionImpl.executeStatementInternal(HiveSessionImpl.java:370)
        at 
org.apache.hive.service.cli.session.HiveSessionImpl.executeStatementAsync(HiveSessionImpl.java:357)
        at 
org.apache.hive.service.cli.CLIService.executeStatementAsync(CLIService.java:238)
        at 
org.apache.hive.service.cli.thrift.ThriftCLIService.ExecuteStatement(ThriftCLIService.java:393)
        at 
org.apache.hive.service.cli.thrift.TCLIService$Processor$ExecuteStatement.getResult(TCLIService.java:1373)
        at 
org.apache.hive.service.cli.thrift.TCLIService$Processor$ExecuteStatement.getResult(TCLIService.java:1358)
        at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
        at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
        at org.apache.thrift.server.TServlet.doPost(TServlet.java:83)
        at 
org.apache.hive.service.cli.thrift.ThriftHttpServlet.doPost(ThriftHttpServlet.java:99)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at 
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:565)
        at 
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:479)
        at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1031)
        at 
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
        at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:965)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
        at org.eclipse.jetty.server.Server.handle(Server.java:345)
        at 
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:449)
        at 
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:925)
        at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:857)
        at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
        at 
org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:76)
        at 
org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)
        at 
org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)



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