06-13-2014 08:33 AM - edited 06-13-2014 08:39 AM
We are using a kerberos cluster running cdh4.7 with hbase, sentry and impala 1.3.1.
1) Connecting without kerberos is succesful, but some commands fail
a) select 1 returns a result
b) show tables; show databases; commands work
c) selecting from a sandbox table returns successfully.
d) running a select on certain tables generates one of 2 errors, depending on how often you run it
Trying to read tables that need ERROR: ExecPlanRequest rpc query_id=5845a82696ff2522:d3a8f29cdc074182 instance_id=5845a82696ff2522:d3a8f29cdc074184 failed: No more data to read.
ERROR: ExecPlanRequest rpc query_id=5845a82696ff2522:d3a8f29cdc074182 instance_id=5845a82696ff2522:d3a8f29cdc074184 failed: No more data to read.
2) Connecting with kerberos just hangs
This is all it does
Starting Impala Shell using Kerberos authentication
Using service name 'impala'
a) I know I have the correct principal because if I try something that doesn't exist, it errors with user not found in kerberos db.
b) I am connected because when I disconnect, this is logged in the impala log
I0613 16:06:28.721554 12984 impala-server.cc:1641] Connection from client xxxxx:57338 closed, closing 1 associated session(s)
We might turn sentry off in the next few days, see if that makes a difference.
If I ctrl-C out of the connect, this is the traceback
Traceback (most recent call last):
File "/usr/lib/impala-shell/impala_shell.py", line 1174, in <module>
shell = ImpalaShell(options)
File "/usr/lib/impala-shell/impala_shell.py", line 159, in __init__
File "/usr/lib/impala-shell/impala_shell.py", line 455, in do_connect
File "/usr/lib/impala-shell/impala_shell.py", line 500, in __connect
File "/usr/lib/impala-shell/lib/thrift_sasl.py", line 80, in open
status, payload = self._recv_sasl_message()
File "/usr/lib/impala-shell/lib/thrift_sasl.py", line 98, in _recv_sasl_message
header = self._trans.readAll(5)
File "/usr/lib/impala-shell/lib/thrift/transport/TTransport.py", line 58, in readAll
chunk = self.read(sz - have)
File "/usr/lib/impala-shell/lib/thrift/transport/TSocket.py", line 103, in read
buff = self.handle.recv(sz)
06-16-2014 06:21 AM
Sorted problem a). The packages do not stop and start impala during a package upgrade. Once we restarted all the impala services, the deserialise messages and errors reading data went away.
Still cannot connect with kerberos options.