我正在使用 DSE 3.1.2 我正在使用 Pig 将一些预处理结果存储到 cql 中，我创建了一个表并启动了我的脚本，它适用于少量数据，当增加更多记录时它不会存储到 cassandra ，只有 90% 或输出存储到 cassandra。
这是我的脚本
SET default_parallel 10;
result = foreach PreprocUDF generate Primary1,Primary2,col3,col4;
finalresult = foreach result generate TOTUPLE(TOTUPLE('Primary1',PreprocUDF::Primary1),TOTUPLE('Primary2',PreprocUDF::Primary2)),TOTUPLE(PreprocUDF::col3,PreprocUDF::col4);
store finalresult into 'cql://conflux/tbl_test?output_query=update+conflux.tbl_test+set+col3+%3D+%3F+,col4+%3D+%3F' using CqlStorage();
现在我收到以下错误，90% 的记录被转储到 cassandra
ERROR - 2014-04-29 01:53:49.590; org.apache.hadoop.security.UserGroupInformation; PriviledgedActionException as:sarrajen cause:java.io.IOException: java.io.IOException: InvalidRequestException(why:Expected 8 or 0 byte long (4))
WARN - 2014-04-29 01:53:49.590; org.apache.hadoop.mapred.Child; Error running child
java.io.IOException: java.io.IOException: InvalidRequestException(why:Expected 8 or 0 byte long (4))
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.runPipeline(PigGenericMapReduce.java:465)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.processOnePackageOutput(PigGenericMapReduce.java:428)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.reduce(PigGenericMapReduce.java:408)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.reduce(PigGenericMapReduce.java:262)
at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:176)
at org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:652)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:420)
at org.apache.hadoop.mapred.Child$4.run(Child.java:266)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
at org.apache.hadoop.mapred.Child.main(Child.java:260)
Caused by: java.io.IOException: InvalidRequestException(why:Expected 8 or 0 byte long (4))
at org.apache.cassandra.hadoop.cql3.CqlRecordWriter$RangeClient.run(CqlRecordWriter.java:248)
Caused by: InvalidRequestException(why:Expected 8 or 0 byte long (4))
at org.apache.cassandra.thrift.Cassandra$execute_prepared_cql3_query_result.read(Cassandra.java:42694)
at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
at org.apache.cassandra.thrift.Cassandra$Client.recv_execute_prepared_cql3_query(Cassandra.java:1724)
at org.apache.cassandra.thrift.Cassandra$Client.execute_prepared_cql3_query(Cassandra.java:1709)
at org.apache.cassandra.hadoop.cql3.CqlRecordWriter$RangeClient.run(CqlRecordWriter.java:232)
INFO - 2014-04-29 01:53:49.764; org.apache.hadoop.mapred.Task; Runnning cleanup for the task
如果我手动插入 cassandra，它执行的 lat 记录工作正常。
如果我将最终结果转储到 CFS，一切正常
store result into '/testop'
Output(s):
Successfully stored 56347 records in: "/testop"
我还尝试将数据转储到 CFS，然后从 CFS 转储到 Cassandra DB，这对我有用。请让我知道我错在哪里。我已经用复合键在 CQL 中创建了表，所以我想我们不需要提供任何比较器和验证器，因为我已经为列指定了数据类型。
store result into '/testop'
x = load '/testop' as (Primary1:chararray,Primary2:long,col3:chararray,col4:long);
finalresult = foreach x generate TOTUPLE(TOTUPLE('Primary1',Primary1),TOTUPLE('Primary2',Primary2)),TOTUPLE(col3,col4);
store finalresult into 'cql://conflux/tbl_test?output_query=update+conflux.tbl_test+set+col3+%3D+%3F+,col4+%3D+%3F' using CqlStorage();
现在这工作正常。
请让我知道我错在哪里。