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From "Tyler Hobbs (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6663) Connecting to a Raspberry PI Cassandra Cluster crashes the node being connected to
Date Fri, 27 Mar 2015 21:11:53 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14384677#comment-14384677
] 

Tyler Hobbs commented on CASSANDRA-6663:
----------------------------------------

[~jesperdj] we don't upgrade libraries in bugfix releases, but I've opened CASSANDRA-9063
to look into upgrading snappy for the 3.0 release.  Thanks for the info!

> Connecting to a Raspberry PI Cassandra Cluster crashes the node being connected to
> ----------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-6663
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6663
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Drivers (now out of tree)
>         Environment: 4x node Raspberry PI cluster
> Macbook running Idle 2.7
>            Reporter: ian mccrae
>         Attachments: Python Client Log.txt, hs_err_pid6327.log
>
>
> I have a working 4x node Raspberry Pi cluster and
> # DevCenter happily connects to this (...which has an option to turn Snappy compression
off)
> # ...however the Python Driver fails to connect and crashes the node being connected
to with the errors in the error-log below.
> There appears to be a problem with Snappy compression (not supported on the Raspberry
Pi).  So I also tried "compression = None" with the same result.
> How might I fix this?
> *Python Code*
> {noformat}
> >>> from cassandra.cluster import Cluster
> >>> cluster = Cluster(['192.168.200.151'], compression = None)
> >>> session = cluster.connect()
> {noformat}
> *Error Log*
> {noformat}
> Traceback (most recent call last):
>   File "<pyshell#58>", line 1, in <module>
>     session = cluster.connect()
>   File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/cassandra/cluster.py",
line 471, in connect
>     self.control_connection.connect()
>   File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/cassandra/cluster.py",
line 1351, in connect
>     self._set_new_connection(self._reconnect_internal())
>   File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/cassandra/cluster.py",
line 1386, in _reconnect_internal
>     raise NoHostAvailable("Unable to connect to any servers", errors)
> NoHostAvailable: ('Unable to connect to any servers', {'192.168.200.151': ConnectionShutdown('Connection
to 192.168.200.151 is closed',))
> {noformat}
> *A Dump of the "cluster" class attributes*
> {noformat}
> >>> pprint(vars(cluster))
> {'_core_connections_per_host': {0: 2, 1: 1},
>  '_is_setup': True,
>  '_is_shutdown': True,
>  '_listener_lock': <thread.lock object at 0x10616d230>,
>  '_listeners': set([]),
>  '_lock': <_RLock owner=None count=0>,
>  '_max_connections_per_host': {0: 8, 1: 2},
>  '_max_requests_per_connection': {0: 100, 1: 100},
>  '_min_requests_per_connection': {0: 5, 1: 5},
>  '_prepared_statements': <WeakValueDictionary at 4396942904>,
>  'compression': None,
>  'contact_points': ['192.168.200.151'],
>  'control_connection': <cassandra.cluster.ControlConnection object at 0x106168cd0>,
>  'control_connection_timeout': 2.0,
>  'cql_version': None,
>  'executor': <concurrent.futures.thread.ThreadPoolExecutor object at 0x106148410>,
>  'load_balancing_policy': <cassandra.policies.RoundRobinPolicy object at 0x104adae50>,
>  'max_schema_agreement_wait': 10,
>  'metadata': <cassandra.metadata.Metadata object at 0x1061481d0>,
>  'metrics_enabled': False,
>  'port': 9042,
>  'scheduler': <cassandra.cluster._Scheduler object at 0x106148550>,
>  'sessions': <_weakrefset.WeakSet object at 0x106148750>,
>  'sockopts': None,
>  'ssl_options': None}
> >>>
> {noformat}



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