Josh Elser created PHOENIX-3164:
-----------------------------------

             Summary: PhoenixConnection leak in PQS with security enabled
                 Key: PHOENIX-3164
                 URL: https://issues.apache.org/jira/browse/PHOENIX-3164
             Project: Phoenix
          Issue Type: Bug
    Affects Versions: 4.8.0
            Reporter: Josh Elser
            Assignee: Josh Elser
            Priority: Critical
             Fix For: 4.8.1


Noticed this one yesterday in some testing. PQS clients were getting stuck in a 
loop trying to find the location of the hbase:meta region, but never actually 
finding it despite HBase appearing to be 100% healthy.

In PQS:

{noformat}
"qtp1908490900-20" daemon prio=10 tid=0x00007f67284ae800 nid=0x72b8 waiting on 
condition [0x00007f66f570a000]
   java.lang.Thread.State: TIMED_WAITING (sleeping)
        at java.lang.Thread.sleep(Native Method)
        at java.lang.Thread.sleep(Thread.java:340)
        at java.util.concurrent.TimeUnit.sleep(TimeUnit.java:360)
        at 
org.apache.hadoop.hbase.util.RetryCounter.sleepUntilNextRetry(RetryCounter.java:158)
        at 
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.getData(RecoverableZooKeeper.java:373)
        at org.apache.hadoop.hbase.zookeeper.ZKUtil.getData(ZKUtil.java:622)
        at 
org.apache.hadoop.hbase.zookeeper.MetaTableLocator.getMetaRegionState(MetaTableLocator.java:491)
        at 
org.apache.hadoop.hbase.zookeeper.MetaTableLocator.getMetaRegionLocation(MetaTableLocator.java:172)
        at 
org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:608)
        at 
org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:589)
        at 
org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:568)
        at 
org.apache.hadoop.hbase.client.ZooKeeperRegistry.getMetaRegionLocation(ZooKeeperRegistry.java:61)
        at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateMeta(ConnectionManager.java:1192)
        - locked <0x000000070b109930> (a java.lang.Object)
        at 
org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1159)
        at 
org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:300)
        at 
org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:156)
        at 
org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:60)
        at 
org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)
        at 
org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:326)
        at 
org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:301)
        at 
org.apache.hadoop.hbase.client.ClientScanner.initializeScannerInConstruction(ClientScanner.java:166)
        at 
org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:161)
        at org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:794)
        at 
org.apache.hadoop.hbase.MetaTableAccessor.fullScan(MetaTableAccessor.java:602)
        at 
org.apache.hadoop.hbase.MetaTableAccessor.tableExists(MetaTableAccessor.java:366)
        at 
org.apache.hadoop.hbase.client.HBaseAdmin.tableExists(HBaseAdmin.java:405)
        at 
org.apache.phoenix.query.ConnectionQueryServicesImpl$13.call(ConnectionQueryServicesImpl.java:2358)
        - locked <0x000000070b0c4d58> (a 
org.apache.phoenix.query.ConnectionQueryServicesImpl)
        at 
org.apache.phoenix.query.ConnectionQueryServicesImpl$13.call(ConnectionQueryServicesImpl.java:2327)
        at 
org.apache.phoenix.util.PhoenixContextExecutor.call(PhoenixContextExecutor.java:78)
        at 
org.apache.phoenix.query.ConnectionQueryServicesImpl.init(ConnectionQueryServicesImpl.java:2327)
        at 
org.apache.phoenix.jdbc.PhoenixDriver.getConnectionQueryServices(PhoenixDriver.java:233)
        at 
org.apache.phoenix.jdbc.PhoenixEmbeddedDriver.createConnection(PhoenixEmbeddedDriver.java:144)
        at org.apache.phoenix.jdbc.PhoenixDriver.connect(PhoenixDriver.java:202)
        at java.sql.DriverManager.getConnection(DriverManager.java:571)
        at java.sql.DriverManager.getConnection(DriverManager.java:187)
        at 
org.apache.calcite.avatica.jdbc.JdbcMeta.openConnection(JdbcMeta.java:616)
        - locked <0x000000070538c5e0> (a 
org.apache.calcite.avatica.jdbc.JdbcMeta)
        at 
org.apache.calcite.avatica.remote.LocalService.apply(LocalService.java:299)
        at 
org.apache.calcite.avatica.remote.Service$OpenConnectionRequest.accept(Service.java:1748)
        at 
org.apache.calcite.avatica.remote.Service$OpenConnectionRequest.accept(Service.java:1728)
        at 
org.apache.calcite.avatica.remote.AbstractHandler.apply(AbstractHandler.java:95)
        at 
org.apache.calcite.avatica.remote.ProtobufHandler.apply(ProtobufHandler.java:46)
        at 
org.apache.calcite.avatica.server.AvaticaProtobufHandler$2.call(AvaticaProtobufHandler.java:120)
        at 
org.apache.calcite.avatica.server.AvaticaProtobufHandler$2.call(AvaticaProtobufHandler.java:118)
        at 
org.apache.phoenix.queryserver.server.Main$PhoenixDoAsCallback$1.run(Main.java:282)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1724)
        at 
org.apache.phoenix.queryserver.server.Main$PhoenixDoAsCallback.doAsRemoteUser(Main.java:279)
        at 
org.apache.calcite.avatica.server.HttpServer$Builder$1.doAsRemoteUser(HttpServer.java:648)
        at 
org.apache.calcite.avatica.server.AvaticaProtobufHandler.handle(AvaticaProtobufHandler.java:117)
        at 
org.apache.phoenix.shaded.org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:542)
        at 
org.apache.phoenix.shaded.org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)
        at 
org.apache.phoenix.shaded.org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
        at 
org.apache.phoenix.shaded.org.eclipse.jetty.server.Server.handle(Server.java:499)
        at 
org.apache.phoenix.shaded.org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
        at 
org.apache.phoenix.shaded.org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
        at 
org.apache.phoenix.shaded.org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
        at 
org.apache.phoenix.shaded.org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
        at 
org.apache.phoenix.shaded.org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
        at java.lang.Thread.run(Thread.java:745)
{noformat}

And on the clients:

{noformat}
AvaticaClientRuntimeException: Remote driver error: RuntimeException: 
java.sql.SQLException: 
org.apache.hadoop.hbase.client.RetriesExhaustedException: Can't get the 
locations -> SQLException: 
org.apache.hadoop.hbase.client.RetriesExhaustedException: Can't get the 
locations -> RetriesExhaustedException: Can't get the locations. Error -1 
(00000) null

java.lang.RuntimeException: java.sql.SQLException: 
org.apache.hadoop.hbase.client.RetriesExhaustedException: Can't get the 
locations
at org.apache.calcite.avatica.jdbc.JdbcMeta.openConnection(JdbcMeta.java:619)
at org.apache.calcite.avatica.remote.LocalService.apply(LocalService.java:299)
at 
org.apache.calcite.avatica.remote.Service$OpenConnectionRequest.accept(Service.java:1748)
at 
org.apache.calcite.avatica.remote.Service$OpenConnectionRequest.accept(Service.java:1728)
at 
org.apache.calcite.avatica.remote.AbstractHandler.apply(AbstractHandler.java:95)
at 
org.apache.calcite.avatica.remote.ProtobufHandler.apply(ProtobufHandler.java:46)
at 
org.apache.calcite.avatica.server.AvaticaProtobufHandler$2.call(AvaticaProtobufHandler.java:120)
at 
org.apache.calcite.avatica.server.AvaticaProtobufHandler$2.call(AvaticaProtobufHandler.java:118)
at 
org.apache.phoenix.queryserver.server.Main$PhoenixDoAsCallback$1.run(Main.java:282)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1724)
at 
org.apache.phoenix.queryserver.server.Main$PhoenixDoAsCallback.doAsRemoteUser(Main.java:279)
at 
org.apache.calcite.avatica.server.HttpServer$Builder$1.doAsRemoteUser(HttpServer.java:648)
at 
org.apache.calcite.avatica.server.AvaticaProtobufHandler.handle(AvaticaProtobufHandler.java:117)
at 
org.apache.phoenix.shaded.org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:542)
at 
org.apache.phoenix.shaded.org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)
at 
org.apache.phoenix.shaded.org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at 
org.apache.phoenix.shaded.org.eclipse.jetty.server.Server.handle(Server.java:499)
at 
org.apache.phoenix.shaded.org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
at 
org.apache.phoenix.shaded.org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at 
org.apache.phoenix.shaded.org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
at 
org.apache.phoenix.shaded.org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at 
org.apache.phoenix.shaded.org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.sql.SQLException: 
org.apache.hadoop.hbase.client.RetriesExhaustedException: Can't get the 
locations
at 
org.apache.phoenix.query.ConnectionQueryServicesImpl$13.call(ConnectionQueryServicesImpl.java:2590)
at 
org.apache.phoenix.query.ConnectionQueryServicesImpl$13.call(ConnectionQueryServicesImpl.java:2327)
at 
org.apache.phoenix.util.PhoenixContextExecutor.call(PhoenixContextExecutor.java:78)
at 
org.apache.phoenix.query.ConnectionQueryServicesImpl.init(ConnectionQueryServicesImpl.java:2327)
at 
org.apache.phoenix.jdbc.PhoenixDriver.getConnectionQueryServices(PhoenixDriver.java:233)
at 
org.apache.phoenix.jdbc.PhoenixEmbeddedDriver.createConnection(PhoenixEmbeddedDriver.java:144)
at org.apache.phoenix.jdbc.PhoenixDriver.connect(PhoenixDriver.java:202)
at java.sql.DriverManager.getConnection(DriverManager.java:571)
at java.sql.DriverManager.getConnection(DriverManager.java:187)
at org.apache.calcite.avatica.jdbc.JdbcMeta.openConnection(JdbcMeta.java:616)
... 24 more
Caused by: org.apache.hadoop.hbase.client.RetriesExhaustedException: Can't get 
the locations
at 
org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:312)
at 
org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:156)
at 
org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:60)
at 
org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)
at org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:326)
at 
org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:301)
at 
org.apache.hadoop.hbase.client.ClientScanner.initializeScannerInConstruction(ClientScanner.java:166)
at org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:161)
at org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:794)
at 
org.apache.hadoop.hbase.MetaTableAccessor.fullScan(MetaTableAccessor.java:602)
at 
org.apache.hadoop.hbase.MetaTableAccessor.tableExists(MetaTableAccessor.java:366)
at org.apache.hadoop.hbase.client.HBaseAdmin.tableExists(HBaseAdmin.java:405)
at 
org.apache.phoenix.query.ConnectionQueryServicesImpl$13.call(ConnectionQueryServicesImpl.java:2358)
... 33 more


at 
org.apache.calcite.avatica.remote.Service$ErrorResponse.toException(Service.java:2453)
at 
org.apache.calcite.avatica.remote.RemoteProtobufService._apply(RemoteProtobufService.java:61)
at 
org.apache.calcite.avatica.remote.ProtobufService.apply(ProtobufService.java:81)
at org.apache.calcite.avatica.remote.Driver.connect(Driver.java:175)
at sqlline.DatabaseConnection.connect(DatabaseConnection.java:157)
at sqlline.DatabaseConnection.getConnection(DatabaseConnection.java:203)
at sqlline.Commands.connect(Commands.java:1064)
at sqlline.Commands.connect(Commands.java:996)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at sqlline.ReflectiveCommandHandler.execute(ReflectiveCommandHandler.java:36)
at sqlline.SqlLine.dispatch(SqlLine.java:804)
at sqlline.SqlLine.initArgs(SqlLine.java:588)
at sqlline.SqlLine.begin(SqlLine.java:656)
at sqlline.SqlLine.start(SqlLine.java:398)
at sqlline.SqlLine.main(SqlLine.java:292)
at 
org.apache.phoenix.queryserver.client.SqllineWrapper$1.run(SqllineWrapper.java:78)
at 
org.apache.phoenix.queryserver.client.SqllineWrapper$1.run(SqllineWrapper.java:75)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1724)
at 
org.apache.phoenix.queryserver.client.SqllineWrapper.main(SqllineWrapper.java:75)
{noformat}

Best as I can tell so far, this is due to PHOENIX-3126 and PQS not caching UGI 
instances. hashCode() and equals() on UGI work on references (not on values). I 
believe the simple fix is to just add some caching of UGI instances for the 
end-users in PQS.



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