现象
通过load data local导入本地文件时报无法导入的错误
hive> load data local inpath '/home/hadoop/out/mid_test.txt' overwrite into table my_mid.mid_test partition (etl_date=20190101);
Loading data to table my_mid.mid_test partition (etl_date=20190101)
Failed with exception Unable to move source file:/home/hadoop/out/mid_test.txt to destination hdfs://namenode01.my.com/my_etl/dw/mid/mid_test/etl_date=20190101/mid_test.txt
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.MoveTask
相关操作
第一次导入时时成功的，后来发现源文件行数有问题，重新复制了一个文本文件到本地导入目录，后续再导入时就出现了上述问题。
解决办法
查询hive日志获得更详细的信息，日志的常见位置为/tmp/${user}/hive.log中
2019-02-19 09:38:21,503 ERROR [main]: exec.Task (SessionState.java:printError(960)) - Failed with exception Unable to move source file:/home/hadoop/out/mid_test.txt to destination hdfs://namenode01.my.com/my_etl/dw/mid/mid_test/etl_date=20190101/mid_test.txt
org.apache.hadoop.hive.ql.metadata.HiveException: Unable to move source file:/home/hadoop/out/mid_test.txt to destination hdfs://namenode01.my.com/my_etl/dw/mid/mid_test/etl_date=20190101/mid_test.txt
at org.apache.hadoop.hive.ql.metadata.Hive.moveFile(Hive.java:2644)
at org.apache.hadoop.hive.ql.metadata.Hive.replaceFiles(Hive.java:2911)
at org.apache.hadoop.hive.ql.metadata.Hive.loadPartition(Hive.java:1398)
at org.apache.hadoop.hive.ql.metadata.Hive.loadPartition(Hive.java:1324)
at org.apache.hadoop.hive.ql.exec.MoveTask.execute(MoveTask.java:438)
at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:160)
at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:88)
at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1653)
at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1412)
at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1195)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1059)
at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1049)
at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:213)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:165)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:376)
at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:736)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:681)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:621)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
Caused by: org.apache.hadoop.fs.ChecksumException: Checksum error: file:/home/hadoop/out/mid_test.txt at 0 exp: -827044509 got: 624370567
at org.apache.hadoop.fs.FSInputChecker.verifySums(FSInputChecker.java:323)
at org.apache.hadoop.fs.FSInputChecker.readChecksumChunk(FSInputChecker.java:279)
at org.apache.hadoop.fs.FSInputChecker.read1(FSInputChecker.java:228)
at org.apache.hadoop.fs.FSInputChecker.read(FSInputChecker.java:196)
at java.io.DataInputStream.read(DataInputStream.java:100)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:85)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:59)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:119)
at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:366)
at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:338)
at org.apache.hadoop.fs.FileSystem.copyFromLocalFile(FileSystem.java:1965)
at org.apache.hadoop.fs.FileSystem.copyFromLocalFile(FileSystem.java:1933)
at org.apache.hadoop.fs.FileSystem.copyFromLocalFile(FileSystem.java:1898)
at org.apache.hadoop.hive.ql.metadata.Hive.moveFile(Hive.java:2637)
... 23 more
```shell
> 确定是校验失败，找到实际原因是旧文件crc文件与新拷贝文件的校验值不一致。
## 检查是否有crc文件
```shell
[hadoop@my-17 out]$ls -al
总用量 112720
drwxrwxr-x 2 hadoop hadoop 4096 2月 19 09:31 .
drwx------. 39 hadoop hadoop 4096 2月 19 09:57 ..
-rw-r--r-- 1 hadoop hadoop 1595242 2月 19 09:12 mid_test.txt
-rw-r--r-- 1 hadoop hadoop 3128 2月 19 08:22 .mid_test.txt.crc
确实有此文件，将crc文件删除即可。
后续导入即成功。