jian yi 2010-02-24, 08:25
On 2/24/10 12:25 AM, "jian yi" <[EMAIL PROTECTED]> wrote:
Run hadoop fsck / will give you summary of current HDFS status
including some useful information :
Minimally replicated blocks: 51224 (100.0 %)
// Number of blocks with number of replicas >= minimum number of replicas configured in "dfs.namenode.replication.min"
Over-replicated blocks: 0 (0.0 %)
// Number of blocks that have more replicas than the replication factor of the file
Under-replicated blocks: 0 (0.0 %)
// Number of blocks that have less replicas than the replication factor of the file
Mis-replicated blocks: 7 (0.013665469 %)
// Blocks with replicas that does not satisfy topology rules. For example instead of 2 replicas in 1 rack and 1 replica in a separate block, all replicas ended up on the same rack.
Default replication factor: 3
// Default replication factor used by the system
Average block replication: 3.0
// Average replicas per block
Missing replicas: 0 (0.0 %)
// Blocks with all the replicas missing
Number of data-nodes: 83
Number of racks: 6
Who can tell me the meaning of items? Thanks.