step1运行失败，请问有人知道是怎么回事吗？

step1运行失败..........

13351 [shutdown-hook-0] DEBUG org.apache.hadoop.ipc.Client  - stopping client from cache: org.apache.hadoop.ipc.Client@291f18

13351 [shutdown-hook-0] DEBUG org.apache.hadoop.ipc.Client  - removing client from cache: org.apache.hadoop.ipc.Client@291f18

13351 [shutdown-hook-0] DEBUG org.apache.hadoop.ipc.Client  - stopping actual client because no more references remain: org.apache.hadoop.ipc.Client@291f18

13351 [shutdown-hook-0] DEBUG org.apache.hadoop.ipc.Client  - Stopping client

13351 [IPC Client (1245065720) connection to /192.168.157.134:9000 from ×ó] DEBUG org.apache.hadoop.ipc.Client  - IPC Client (1245065720) connection to /192.168.157.134:9000 from ×ó: closed

13351 [IPC Client (1245065720) connection to /192.168.157.134:9000 from ×ó] DEBUG org.apache.hadoop.ipc.Client  - IPC Client (1245065720) connection to /192.168.157.134:9000 from ×ó: stopped, remaining connections 0

13453 [Thread-2] DEBUG org.apache.hadoop.util.ShutdownHookManager  - Completed shutdown in 0.118 seconds; Timeouts: 0

13460 [Thread-2] DEBUG org.apache.hadoop.util.ShutdownHookManager  - ShutdownHookManger completed shutdown.

Disconnected from the target VM, address: '127.0.0.1:3402', transport: 'socket'

以上是运行失败报的错，请问有人知道是怎么回事吗？