You can look at BlockPoolSliceScanner#scan method. This is in trunk code. You can find this logic in DataBlockScanner#run in earlier versions. Regards, Uma ----- Original Message ----- From: kartheek muthyala <kartheek0...@gmail.com> Date: Monday, November 7, 2011 7:31 pm Subject: Any daemon? To: common-user@hadoop.apache.org
> Hi all, > I am interested in knowing, if there is any background daemon in > hadoopwhich runs for regular periods checking if all the data > copies(blocks as > listed in block map) do exist and are not corrupted?. Can you > please point > me to that piece of code in hadoop? > Thanks, > Kartheek. >
