hadoop错误："failed to report status for 600 seconds"

<property>

? <name>mapred.task.timeout</name>

? <value>600000</value>

? <description>The number of milliseconds before a task will be

? terminated if it neither reads an input, writes an output, nor

? updates its status string.

? </description>

</property>

?

由于执行合并索引操作时间较长，所以超过了600秒的时间限制，把这个值改高点就不会报错了