The NameNode detects this condition by the absence of a Heartbeat message. The NameNode marks DataNodes without recent Heartbeats as dead and does not forward any new IO requests to them.

Namenode通过心跳包的缺失检测到这一情况，并将这些Datanode标记为dead，不会将新的IO请求发给它们。

youdao

All change is not growth, as all movement is not forward.

并非所有的变化都是增长，就像不是所有的运动都在向前进。

youdao

Do not forward this email directly.

本邮件请勿直接转发。

youdao

The spokeswoman says if you get an e-mail you are not sure about, forward it or send a separate message to ContactETS@ets.org.

VOA: special.2010.02.18

Chemistry and biology, physics has the advantage that the desktop experiments can do are relatively straight forward than not dangerous.

化学和生物的话，物理有一个好处就是,桌面实验能做到,直观却不危险,地反映结果。

麻省理工公开课 - 媒体、教育、市场课程节选

010 will be her last year in the academic world, but not the last year of her many many occupations we are looking forward to hearing about that.

010年是她最后一年大学执教生涯，但这并非她的最后一份工作,我们还将期待她的很多其他事业。

普林斯顿公开课 - 人性课程节选

If that's not forward-thinking enough, Toshi's also outlining its future concepts, dubbed CELL REGZA NEXT.

ENGADGET: Toshiba details CELL REGZA LCD TV, coming December to Japan (update: video!)

As TD Ameritrade notes, the index is a look back, not forward.

FORBES: You Can't Win If You Don't Finish the Investing Race

The 999 handler who took the call and the member of staff who handled the information did not forward the information to Operation Ruby.

BBC: Milly Dowler murder: Surrey Police say mistakes made