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https://issues.apache.org/jira/browse/CASSANDRA-12535?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Joshua McKenzie updated CASSANDRA-12535:
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Reviewer: Carl Yeksigian
> Occasionally seeing AccessControlException, CodecNotFoundException when
> executing a User Defined Aggregate
> ----------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-12535
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12535
> Project: Cassandra
> Issue Type: Bug
> Environment: Cassandra 3.7 (via brew install), Mac OS X 10.11.6
> Reporter: Pat Patterson
> Assignee: Robert Stupp
> Priority: Minor
> Fix For: 3.0.x, 3.x
>
>
> I have defined a UDA to implement standard deviation:
> {noformat}
> cqlsh:mykeyspace> CREATE OR REPLACE FUNCTION sdState ( state
> tuple<int,double,double>, val double ) CALLED ON NULL INPUT RETURNS
> tuple<int,double,double> LANGUAGE java AS
> ... 'int n = state.getInt(0); double mean = state.getDouble(1); double m2 =
> state.getDouble(2); n++; double delta = val - mean; mean += delta / n; m2 +=
> delta * (val - mean); state.setInt(0, n); state.setDouble(1, mean);
> state.setDouble(2, m2); return state;';
> cqlsh:mykeyspace> CREATE OR REPLACE FUNCTION sdFinal ( state
> tuple<int,double,double> ) CALLED ON NULL INPUT RETURNS double LANGUAGE java
> AS
> ... 'int n = state.getInt(0); double m2 = state.getDouble(2); if (n < 1) {
> return null; } return Math.sqrt(m2 / (n - 1));';
> cqlsh:mykeyspace> CREATE AGGREGATE IF NOT EXISTS stdev ( double )
> ... SFUNC sdState STYPE tuple<int,double,double> FINALFUNC sdFinal INITCOND
> (0,0,0);
> {noformat}
> My table:
> {noformat}
> CREATE TABLE readings (
> sensor_id int,
> time timestamp,
> temperature double,
> status text,
> PRIMARY KEY (sensor_id, time)
> ) WITH CLUSTERING ORDER BY (time ASC);
> {noformat}
> I'm inserting a row every 0.1 seconds. The data looks like this:
> {noformat}
> cqlsh:mykeyspace> select * from readings limit 10;
> sensor_id | time | status | temperature
> -----------+---------------------------------+--------+-------------
> 5 | 2016-08-24 19:11:34.896000+0000 | OK | 9.97
> 5 | 2016-08-24 19:11:43.933000+0000 | OK | 10.28
> 5 | 2016-08-24 19:11:49.958000+0000 | OK | 7.65
> 5 | 2016-08-24 19:11:51.968000+0000 | OK | 10.11
> 5 | 2016-08-24 19:12:58.512000+0000 | Fault | 10.41
> 5 | 2016-08-24 19:13:04.542000+0000 | OK | 9.66
> 5 | 2016-08-24 19:13:16.593000+0000 | OK | 10.9
> 5 | 2016-08-24 19:13:37.692000+0000 | OK | 11.2
> 5 | 2016-08-24 19:13:46.738000+0000 | OK | 10.34
> 5 | 2016-08-24 19:13:49.757000+0000 | OK | 10.6
> {noformat}
> I'm running a query every few seconds with my UDA - like this (timestamps are
> different each time):
> {noformat}
> select avg(temperature), stdev(temperature) from readings where sensor_id = 1
> and time > 1472066523193;
> {noformat}
> Most of the time, this works just fine:
> {noformat}
> cqlsh:mykeyspace> select avg(temperature), stdev(temperature) from readings
> where sensor_id = 1 and time > 1472066523193;
> system.avg(temperature) | mykeyspace.stdev(temperature)
> -------------------------+-------------------------------
> 9.9291 | 0.94179
> (1 rows)
> {noformat}
> But, occasionally, it fails with one of two exceptions:
> {noformat}
> cqlsh:mykeyspace> select avg(temperature), stdev(temperature) from readings
> where sensor_id = 1 and time > 1472066523193;
> Traceback (most recent call last):
> File "/usr/local/Cellar/cassandra/3.7/libexec/bin/cqlsh.py", line 1277, in
> perform_simple_statement
> result = future.result()
> File "cassandra/cluster.py", line 3629, in
> cassandra.cluster.ResponseFuture.result (cassandra/cluster.c:69369)
> raise self._final_exception
> FunctionFailure: Error from server: code=1400 [User Defined Function failure]
> message="execution of 'mykeyspace.sdstate[frozen<tuple<int, double, double>>,
> double]' failed: java.security.AccessControlException: access denied
> ("java.io.FilePermission" "/usr/local/etc/cassandra/logback.xml" "read")"
> {noformat}
> or
> {noformat}
> cqlsh:mykeyspace> select count(*), avg(temperature), stdev(temperature) from
> readings where sensor_id = 1 and time > '2016-08-24 15:00:00.000+0000';
> Traceback (most recent call last):
> File "/usr/local/Cellar/cassandra/3.7/libexec/bin/cqlsh.py", line 1277, in
> perform_simple_statement
> result = future.result()
> File "cassandra/cluster.py", line 3629, in
> cassandra.cluster.ResponseFuture.result (cassandra/cluster.c:69369)
> raise self._final_exception
> FunctionFailure: Error from server: code=1400 [User Defined Function failure]
> message="execution of 'mykeyspace.sdstate[frozen<tuple<int, double, double>>,
> double]' failed: com.datastax.driver.core.exceptions.CodecNotFoundException"
> {noformat}
> The next query usually works ok.
> I don't see any clues in /usr/local/var/log/cassandra/system.log
> If I can pin it down more, I'll post follow-up comments.
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