Ted, I'm still learning, obviously. I was not aware one could upload from any machine other than the master (which did seem overly restrictive), and uploading from one outside the cloud would be even better. Can you give me a pointer on how to accomplish this? Is there a relevant FAQ or documents I have missed?
My experience with balancing is similar to yours; the upload is uniform, independent of disk size or availability. I will try rebalancing. Thanks, Jeff -----Original Message----- From: Ted Dunning [mailto:[EMAIL PROTECTED] Sent: Thursday, December 20, 2007 12:02 PM To: hadoop-user@lucene.apache.org Subject: Re: DFS Block Allocation Yes. I try to always upload data from a machine that is not part of the cluster for exactly that reason. I still find that I need to rebalance due to a strange problem in placement. My datanodes have 10x different sized HDFS disks and I suspect that the upload is picking datanodes uniformly rather than according to available space. Oddly enough, my rebalancing code works well. All it does is iterate through all files of interest, increasing the replication count for 30 seconds and then decreasing it again (obviously this has to thread to manipulate more than 2 files per minute). The replication code seems to select a home for new blocks more correctly than the original placement. On 12/20/07 10:16 AM, "Jeff Eastman" <[EMAIL PROTECTED]> wrote: > Noting your use of the word "attempts", can I conclude that at some point it > might be impossible to upload blocks from a local file to the DFS on the same > node and at that point the blocks would all be loaded elsewhere?
