Hi,

When I use C++ to call 0.92 HBase java APIs, it failed to log in. I tried similar operation by directly using Java Api, and they succeed.
So, is there any difference between using java api through JNI with directly calling the same java api??

Can anyone help me out? Thank you very much.

Here is the call stack when using jni to call java api:
java.lang.RuntimeException: java.io.IOException: failure to login
                at org.apache.hadoop.hbase.client.HTableFactory.createHTableInterface(HTableFactory.java:38)
                at org.apache.hadoop.hbase.client.HTablePool.createHTable(HTablePool.java:268)
                at org.apache.hadoop.hbase.client.HTablePool.findOrCreateTable(HTablePool.java:198)
                at org.apache.hadoop.hbase.client.HTablePool.getTable(HTablePool.java:173)
                at org.apache.hadoop.hbase.client.HTablePool.getTable(HTablePool.java:216)
                at com.microstrategy.database.hbase.HBaseWrapper.Execute(HBaseWrapper.java:151)
Caused by: java.io.IOException: failure to login
                at org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:452)
                at org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:414)
                at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
                at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
                at java.lang.reflect.Method.invoke(Method.java:597)
                at org.apache.hadoop.hbase.util.Methods.call(Methods.java:37)
                at org.apache.hadoop.hbase.security.User.call(User.java:586)
                at org.apache.hadoop.hbase.security.User.callStatic(User.java:576)
                at org.apache.hadoop.hbase.security.User.access$400(User.java:50)
                at org.apache.hadoop.hbase.security.User$SecureHadoopUser.<init>(User.java:393)
                at org.apache.hadoop.hbase.security.User$SecureHadoopUser.<init>(User.java:388)
                at org.apache.hadoop.hbase.security.User.getCurrent(User.java:139)
                at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:280)
                at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:332)
                at org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:236)
                at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1278)
                at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1235)
                at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1222)
                at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:918)
                at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:814)
                at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.relocateRegion(HConnectionManager.java:788)
                at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:1024)
                at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:818)
                at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:782)
                at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:249)
                at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:213)
                at org.apache.hadoop.hbase.client.HTableFactory.createHTableInterface(HTableFactory.java:36)
                ... 5 more
Caused by: javax.security.auth.login.LoginException: unable to find LoginModule class: org/apache/hadoop/security/UserGroupInformation$HadoopLoginModule
                at javax.security.auth.login.LoginContext.invoke(LoginContext.java:808)
                at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186)
                at javax.security.auth.login.LoginContext$5.run(LoginContext.java:706)
                at java.security.AccessController.doPrivileged(Native Method)
                at javax.security.auth.login.LoginContext.invokeCreatorPriv(LoginContext.java:703)
                at javax.security.auth.login.LoginContext.login(LoginContext.java:575)
                at org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:433)
                ... 31 more

CLASSPATH issue?

Says:

unable to find LoginModule class:
org/apache/hadoop/security/UserGroupInformation$HadoopLoginModule
St.Ack

On Thu, Sep 13, 2012 at 8:50 PM, Lu, Wei <[EMAIL PROTECTED]> wrote:
> Hi,
>
> When I use C++ to call 0.92 HBase java APIs, it failed to log in. I tried similar operation by directly using Java Api, and they succeed.
> So, is there any difference between using java api through JNI with directly calling the same java api??
>
> Can anyone help me out? Thank you very much.
>
> Here is the call stack when using jni to call java api:
>
>
> java.lang.RuntimeException: java.io.IOException: failure to login
>                 at org.apache.hadoop.hbase.client.HTableFactory.createHTableInterface(HTableFactory.java:38)
>                 at org.apache.hadoop.hbase.client.HTablePool.createHTable(HTablePool.java:268)
>                 at org.apache.hadoop.hbase.client.HTablePool.findOrCreateTable(HTablePool.java:198)
>                 at org.apache.hadoop.hbase.client.HTablePool.getTable(HTablePool.java:173)
>                 at org.apache.hadoop.hbase.client.HTablePool.getTable(HTablePool.java:216)
>                 at com.microstrategy.database.hbase.HBaseWrapper.Execute(HBaseWrapper.java:151)
> Caused by: java.io.IOException: failure to login
>                 at org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:452)
>                 at org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:414)
>                 at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
>                 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>                 at java.lang.reflect.Method.invoke(Method.java:597)
>                 at org.apache.hadoop.hbase.util.Methods.call(Methods.java:37)
>                 at org.apache.hadoop.hbase.security.User.call(User.java:586)
>                 at org.apache.hadoop.hbase.security.User.callStatic(User.java:576)
>                 at org.apache.hadoop.hbase.security.User.access$400(User.java:50)
>                 at org.apache.hadoop.hbase.security.User$SecureHadoopUser.<init>(User.java:393)
>                 at org.apache.hadoop.hbase.security.User$SecureHadoopUser.<init>(User.java:388)
>                 at org.apache.hadoop.hbase.security.User.getCurrent(User.java:139)
>                 at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:280)
>                 at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:332)
>                 at org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:236)
>                 at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1278)
>                 at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1235)
>                 at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHRegionConnection(HConnectionManager.java:1222)
>                 at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:918)
>                 at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:814)
>                 at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.relocateRegion(HConnectionManager.java:788)
>                 at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:1024)
>                 at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:818)
>                 at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:782)
>                 at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:249)