具体报错如下：
Error: java.lang.NullPointerException
at com.hadoop.mapreduce.LzoSplitRecordReader.initialize(LzoSplitRecordReader.java:63)
at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:560)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:798)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:347)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:174)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1729)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:168)
2021-12-21 11:14:28,253 INFO mapreduce.Job: Task Id : attempt_1639967851440_0006_m_000000_1, Status : FAILED
Error: java.lang.NullPointerException
at com.hadoop.mapreduce.LzoSplitRecordReader.initialize(LzoSplitRecordReader.java:63)
at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:560)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:798)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:347)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:174)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1729)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:168)
2021-12-21 11:14:31,265 INFO mapreduce.Job: Task Id : attempt_1639967851440_0006_m_000000_2, Status : FAILED
Error: java.lang.NullPointerException
at com.hadoop.mapreduce.LzoSplitRecordReader.initialize(LzoSplitRecordReader.java:63)
at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:560)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:798)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:347)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:174)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1729)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:168)
2021-12-21 11:14:36,283 INFO mapreduce.Job: map 100% reduce 0%
2021-12-21 11:14:37,292 INFO mapreduce.Job: Job job_1639967851440_0006 failed with state FAILED due to: Task failed task_1639967851440_0006_m_000000
Job failed as tasks failed. failedMaps:1 failedReduces:0 killedMaps:0 killedReduces: 0
2021-12-21 11:14:37,344 INFO mapreduce.Job: Counters: 9
Job Counters
Failed map tasks=4
Launched map tasks=4
Other local map tasks=3
Data-local map tasks=1
Total time spent by all maps in occupied slots (ms)=11344
Total time spent by all reduces in occupied slots (ms)=0
Total time spent by all map tasks (ms)=5672
Total vcore-milliseconds taken by all map tasks=5672
Total megabyte-milliseconds taken by all map tasks=5808128
2021-12-21 11:14:37,345 ERROR lzo.DistributedLzoIndexer: DistributedIndexer job job_1639967851440_0006 failed.
解决方法：
在core-site.xml增加配置支持LZO压缩配置即可。
io.compression.codecs org.apache.hadoop.io.compress.GzipCodec, org.apache.hadoop.io.compress.DefaultCodec, org.apache.hadoop.io.compress.BZip2Codec, org.apache.hadoop.io.compress.SnappyCodec, com.hadoop.compression.lzo.LzoCodec, com.hadoop.compression.lzo.LzopCodec io.compression.codec.lzo.class com.hadoop.compression.lzo.LzoCodec
