在windows下，使用hadoop-1.0.4自带的hadoop-core-1.0.4.jar时，会抛出权限异常：cause:java.io.IOException: Failed to set permissions of path: \tmp\hadoop-Administrator\mapred\staging\Administrator-519341271\.staging to 0700 上述jar包，是修改了源码FileUtil.java后，编译得到的hadoop-core-1.
在windows下，使用hadoop-1.0.4自带的hadoop-core-1.0.4.jar时，会抛出权限异常：cause:java.io.IOException: Failed to set permissions of path: \tmp\hadoop-Administrator\mapred\staging\Administrator-2070047262\.staging to 0700 上述jar包，是修改了源码FileUtil.java后，编译得到的hadoop-core-1
在windows下，使用hadoop-1.0.4自带的hadoop-core-1.0.4.jar时，会抛出权限异常：cause:java.io.IOException: Failed to set permissions of path: \tmp\hadoop-Administrator\mapred\staging\Administrator-519341271\.staging to 0700 上述jar包，是修改了源码FileUtil.java后，编译得到的hadoop-core-1.
在windows下，使用hadoop-1.0.4自带的hadoop-core-1.0.4.jar时，会抛出权限异常：cause:java.io.IOException: Failed to set permissions of path: \tmp\hadoop-zhuming\mapred\staging\zhumnig-2070047262\.staging to 0700 hadoop-core-1.0.4-modified.jar包，是修改了源码FileUtil.java后，编译得到的
windows下搭建nutch会遇到Hadoop下FileUtil.java问题，所以我们一般的做法是找到Hadoop-core-1.2.0源码中的org.apache.hadoop.fs下的FileUtil.java修改其中的CheckReturnValue方法，注释掉其中的内容这时运行会遇到错误Exception in thread "main" java.io.IOException: Failed to set permissions of path: \tmp\hadoop-Admi
在Linux上创建10_000个线程
13:32:50|~/tmp/manythreads|HEAD:high_voltage:?
λ t cargo run --release
Finished release [optimized] target(s) in 0.00s
Running `target/release/ten-thousand-threads`
real 10.27s
user 4.61s
sys 18.46s
rss 88472k
13:33:23|~
