我正在从 DataStax 运行 Pig 示例：http ://www.datastax.com/docs/datastax_enterprise3.1/solutions/about_pig#pig-read-write 。我正在使用 DataStax Enterprise 3.1.2。但是当我想将数据保存回 Cassandra 时：
grunt> STORE insertformat INTO
'cql://cql3ks/test?output_query=UPDATE+cql3ks.test+set+b+%3D+%3F'
USING CqlStorage;
我得到以下输出：
2014-03-11 10:14:38,383 [main] INFO org.apache.pig.tools.pigstats.ScriptState - Pig features used in the script: UNKNOWN
2014-03-11 10:14:38,440 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompiler - File concatenation threshold: 100 optimistic? false
2014-03-11 10:14:38,442 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MultiQueryOptimizer - MR plan size before optimization: 1
2014-03-11 10:14:38,442 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MultiQueryOptimizer - MR plan size after optimization: 1
2014-03-11 10:14:38,451 [main] INFO org.apache.pig.tools.pigstats.ScriptState - Pig script settings are added to the job
2014-03-11 10:14:38,452 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler - mapred.job.reduce.markreset.buffer.percent is not set, set to default 0.3
2014-03-11 10:14:38,452 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler - creating jar file Job1332293282461754849.jar
2014-03-11 10:14:40,560 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler - jar file Job1332293282461754849.jar created
2014-03-11 10:14:40,569 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler - Setting up single store job
2014-03-11 10:14:40,597 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - 1 map-reduce job(s) waiting for submission.
2014-03-11 10:14:41,111 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - 0% complete
2014-03-11 10:14:43,934 [Thread-10] INFO org.apache.pig.backend.hadoop.executionengine.util.MapRedUtil - Total input paths (combined) to process : 1
2014-03-11 10:14:45,547 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - HadoopJobId: job_201403091619_0036
2014-03-11 10:14:45,547 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - More information at: http://127.0.0.1:50030/jobdetails.jsp?jobid=job_201403091619_0036
2014-03-11 10:17:52,330 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - job job_201403091619_0036 has failed! Stop running all dependent jobs
2014-03-11 10:17:52,330 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - 100% complete
2014-03-11 10:17:52,334 [main] ERROR org.apache.pig.tools.pigstats.SimplePigStats - ERROR 2997: Unable to recreate exception from backed error: java.io.IOException: InvalidRequestException(why:Expected 4 or 0 byte int (11))
2014-03-11 10:17:52,335 [main] ERROR org.apache.pig.tools.pigstats.PigStatsUtil - 1 map reduce job(s) failed!
2014-03-11 10:17:52,335 [main] INFO org.apache.pig.tools.pigstats.SimplePigStats - Script Statistics:
HadoopVersion PigVersion UserId StartedAt FinishedAt Features
1.0.4.8 0.9.2 root 2014-03-11 10:14:38 2014-03-11 10:17:52 UNKNOWN
Failed!
Failed Jobs:
JobId Alias Feature Message Outputs
job_201403091619_0036 insertformat,moretestvalues MAP_ONLY Message: Job failed! Error - # of failed Map Tasks exceeded allowed limit. FailedCount: 1. LastFailedTask: task_201403091619_0036_m_000000 cql://cql3ks/test?output_query=UPDATE+cql3ks.test+set+b+%3D+%3F,
Input(s):
Failed to read data from "cql://cql3ks/moredata/"
Output(s):
Failed to produce result in "cql://cql3ks/test?output_query=UPDATE+cql3ks.test+set+b+%3D+%3F"
Counters:
Total records written : 0
Total bytes written : 0
Spillable Memory Manager spill count : 0
Total bags proactively spilled: 0
Total records proactively spilled: 0
Job DAG:
job_201403091619_0036
2014-03-11 10:17:52,335 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Failed!
日志文件是：
Backend error message
---------------------
java.io.IOException: InvalidRequestException(why:Expected 4 or 0 byte int (11))
at org.apache.cassandra.hadoop.cql3.CqlRecordWriter$RangeClient.run(CqlRecordWriter.java:248)
Caused by: InvalidRequestException(why:Expected 4 or 0 byte int (11))
at org.apache.cassandra.thrift.Cassandra$execute_prepared_cql3_query_result.read(Cassandra.java:41868)
at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
at org.apache.cassandra.thrift.Cassandra$Client.recv_execute_prepared_cql3_query(Cassandra.java:1689)
at org.apache.cassandra.thrift.Cassandra$Client.execute_prepared_cql3_query(Cassandra.java:1674)
at org.apache.cassandra.hadoop.cql3.CqlRecordWriter$RangeClient.run(CqlRecordWriter.java:232)
我做错了什么？对我来说，它看起来像一个错误，因为当我在创建表时在 CQL 中使用字符串而不是整数时，示例运行良好。
谢谢