我正在RC尝试ORC使用LZ4. 我已经安装了 Hadoop-2.7.1 和 Hive-1.2.1。在这种情况下LZ4，我可以RC毫无问题地压缩文件。但是，当我尝试使用 加载ORC文件中的数据时LZ4，它不起作用。我创建了ORC如下表：
CREATE TABLE FINANCE_orc(
PERMNO STRING,
DATE STRING,
CUSIP STRING,
NCUSIP STRING,
COMNAM STRING,
TICKET STRING,
PERMCO STRING,
SHRCD STRING,
EXCHCD STRING,
HEXCD STRING,
SICCD STRING,
HSLCCD STRING,
PRC STRING,
VOL STRING,
RET STRING,
SHROUT STRING,
DLRET STRING,
VWRETD STRING,
EWRETD STRING,
SPRTRN STRING)
STORED AS ORC tblproperties ("orc.compress"="Lz4");
set mapred.output.compress=true;
set hive.exec.compress.output=true;
set mapred.output.compression.type = BLOCK;
set mapred.output.compression.codec=org.apache.hadoop.io.compress.GzipCodec;
set io.compression.codecs=org.apache.hadoop.io.compress.GzipCodec;
INSERT OVERWRITE table finance_orc select * from finance;
但是在加载数据时，它给出了以下错误：
Error: java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while processing row {"permno":"PERMNO","ndate":"DATE","cusip":"CUSIP","ncusip":"NCUSIP","comnam":"COMNAM","ticket":"TICKER","permco":"PERMCO","shrcd":"SHRCD","exchcd":"EXCHCD","hexcd":"HEXCD","siccd":"SICCD","hslccd":"HSICCD","prc":"PRC","vol":"VOL","ret":"RET","shrout":"SHROUT","dlret":"DLRET","vwretd":"VWRETD","ewretd":"EWRETD","sprtrn":"SPRTRN"}
at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:172)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:453)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while processing row {"permno":"PERMNO","ndate":"DATE","cusip":"CUSIP","ncusip":"NCUSIP","comnam":"COMNAM","ticket":"TICKER","permco":"PERMCO","shrcd":"SHRCD","exchcd":"EXCHCD","hexcd":"HEXCD","siccd":"SICCD","hslccd":"HSICCD","prc":"PRC","vol":"VOL","ret":"RET","shrout":"SHROUT","dlret":"DLRET","vwretd":"VWRETD","ewretd":"EWRETD","sprtrn":"SPRTRN"}
at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:518)
at org.apache.hadoop.hive.ql.exec.mr.ExecMapper.map(ExecMapper.java:163)
... 8 more
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.IllegalArgumentException: No enum constant org.apache.hadoop.hive.ql.io.orc.CompressionKind.Lz4
at org.apache.hadoop.hive.ql.exec.FileSinkOperator.createBucketFiles(FileSinkOperator.java:577)
at org.apache.hadoop.hive.ql.exec.FileSinkOperator.process(FileSinkOperator.java:675)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:837)
at org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:88)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:837)
at org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:97)
at org.apache.hadoop.hive.ql.exec.MapOperator$MapOpCtx.forward(MapOperator.java:162)
at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:508)
... 9 more
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.IllegalArgumentException: No enum constant org.apache.hadoop.hive.ql.io.orc.CompressionKind.Lz4
at org.apache.hadoop.hive.ql.io.HiveFileFormatUtils.getHiveRecordWriter(HiveFileFormatUtils.java:249)
at org.apache.hadoop.hive.ql.exec.FileSinkOperator.createBucketForFileIdx(FileSinkOperator.java:622)
at org.apache.hadoop.hive.ql.exec.FileSinkOperator.createBucketFiles(FileSinkOperator.java:566)
... 16 more
Caused by: java.lang.IllegalArgumentException: No enum constant org.apache.hadoop.hive.ql.io.orc.CompressionKind.Lz4
at java.lang.Enum.valueOf(Enum.java:236)
at org.apache.hadoop.hive.ql.io.orc.CompressionKind.valueOf(CompressionKind.java:25)
at org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat.getOptions(OrcOutputFormat.java:143)
at org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat.getHiveRecordWriter(OrcOutputFormat.java:203)
at org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat.getHiveRecordWriter(OrcOutputFormat.java:52)
at org.apache.hadoop.hive.ql.io.HiveFileFormatUtils.getRecordWriter(HiveFileFormatUtils.java:261)
at org.apache.hadoop.hive.ql.io.HiveFileFormatUtils.getHiveRecordWriter(HiveFileFormatUtils.java:246)
... 18 more
FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask
MapReduce Jobs Launched:
Stage-Stage-1: Map: 4 HDFS Read: 0 HDFS Write: 0 FAIL
Total MapReduce CPU Time Spent: 0 msec
我已经使用Snappy和Zlib使用相同的命令，它工作正常。但问题仅在于LZ4. 不知是什么原因？