经常遇到的exception是：
1.
PipeMapRed.waitOutputThreads(): subprocess failed with code N ............
2.
Task process exit with nonzero status of N ............
java.lang.Throwable: Child Errorat org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:271) Caused by: java.io.IOException: Task process exit with nonzero status of 82. at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:258), java.lang.Throwable: Child Errorat org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:271 Caused by: java.io.IOException: Task process exit with nonzero status of 82. at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:258) java.lang.Throwable: Child Errorat org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:271) Caused by: java.io.IOException: Task process exit with nonzero status of 82. at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:258), java.lang.Throwable: Child Errorat org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:271 Caused by: java.io.IOException: Task process exit with nonzero status of 82. at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:258)
Exit Code 的含义
"OS error code 1: Operation not permitted" "OS error code 2: No such file or directory" "OS error code 3: No such process" "OS error code 4: Interrupted system call" "OS error code 5: Input/output error" "OS error code 6: No such device or address" "OS error code 7: Argument list too long" "OS error code 8: Exec format error" "OS error code 9: Bad file descriptor" "OS error code 10: No child processes" "OS error code 11: Resource temporarily unavailable" "OS error code 12: Cannot allocate memory" "OS error code 13: Permission denied" "OS error code 14: Bad address" "OS error code 15: Block device required" "OS error code 16: Device or resource busy" "OS error code 17: File exists" "OS error code 18: Invalid cross-device link" "OS error code 19: No such device" "OS error code 20: Not a directory" "OS error code 21: Is a directory" "OS error code 22: Invalid argument" "OS error code 23: Too many open files in system" "OS error code 24: Too many open files" "OS error code 25: Inappropriate ioctl for device" "OS error code 26: Text file busy" "OS error code 27: File too large" "OS error code 28: No space left on device" "OS error code 29: Illegal seek" "OS error code 30: Read-only file system" "OS error code 31: Too many links" "OS error code 32: Broken pipe" "OS error code 33: Numerical argument out of domain" "OS error code 34: Numerical result out of range" "OS error code 35: Resource deadlock avoided" "OS error code 36: File name too long" "OS error code 37: No locks available" "OS error code 38: Function not implemented" "OS error code 39: Directory not empty" "OS error code 40: Too many levels of symbolic links" "OS error code 42: No message of desired type" "OS error code 43: Identifier removed" "OS error code 44: Channel number out of range" "OS error code 45: Level 2 not synchronized" "OS error code 46: Level 3 halted" "OS error code 47: Level 3 reset" "OS error code 48: Link number out of range" "OS error code 49: Protocol driver not attached" "OS error code 50: No CSI structure available" "OS error code 51: Level 2 halted" "OS error code 52: Invalid exchange" "OS error code 53: Invalid request descriptor" "OS error code 54: Exchange full" "OS error code 55: No anode"