anchor.diff:  > curl -XPUT 'localhost:9200/wiki/_settings' -d'{"number_of_replicas":1}'
   {"acknowledged":true}
   
  -> curl -XGET 'localhost:9200/_cat/recovery?v'
  -index shard time type    stage source target files percent bytes    percent
  -wiki  0     1252 store done  hostA  hostA  4     100.0%  23638870 100.0%
  -wiki  0     1672 replica index hostA  hostB  4     75.0%   23638870 48.8%
  -wiki  1     1698 replica index hostA  hostB  4     75.0%   23348540 49.4%
  -wiki  1     4812 store done  hostA  hostA  33    100.0%  24501912 100.0%
  -wiki  2     1689 replica index hostA  hostB  4     75.0%   28681851 40.2%
  -wiki  2     5317 store done  hostA  hostA  36    100.0%  30267222 100.0%
  +> curl -XGET 'localhost:9200/_cat/recovery?v&h=i,s,t,ty,st,shost,thost,f,fp,b,bp'
  +i     s t      ty      st    shost  thost  f     fp      b        bp
  +wiki  0 1252ms store   done  hostA  hostA  4     100.0%  23638870 100.0%
  +wiki  0 1672ms replica index hostA  hostB  4     75.0%   23638870 48.8%
  +wiki  1 1698ms replica index hostA  hostB  4     75.0%   23348540 49.4%
  +wiki  1 4812ms store   done  hostA  hostA  33    100.0%  24501912 100.0%
  +wiki  2 1689ms replica index hostA  hostB  4     75.0%   28681851 40.2%
  +wiki  2 5317ms store   done  hostA  hostA  36    100.0%  30267222 100.0%
   ----------------------------------------------------------------------------
   
   We can see in the above listing that our 3 initial shards are in various stages
  
positive.code: [source,sh]
  ----------------------------------------------------------------------------
  > curl -XGET 'localhost:9200/_cat/recovery?v'
  index shard time type    stage source target files percent bytes     percent
  wiki  0     73   store done  hostA  hostA  36    100.0%  24982806 100.0%
  wiki  1     245  store done  hostA  hostA  33    100.0%  24501912 100.0%
  wiki  2     230  store done  hostA  hostA  36    100.0%  30267222 100.0%
  ---------------------------------------------------------------------------
  
  In the above case, the source and target nodes are the same because the recovery
  
negative.code: --------------------------------------------------------------------------------
  > curl -XPOST 'localhost:9200/_snapshot/imdb/snapshot_2/_restore'
  {"acknowledged":true}
  > curl -XGET 'localhost:9200/_cat/recovery?v&h=i,s,t,ty,st,rep,snap,f,fp,b,bp'
  i     s t      ty       st    rep        snap     f     fp      b     bp
  imdb  0 1978ms snapshot done  imdb       snap_1   79    8.0%    12086 9.0%
  imdb  1 2790ms snapshot index imdb       snap_1   88    7.7%    11025 8.1%
  imdb  2 2790ms snapshot index imdb       snap_1   85    0.0%    12072 0.0%
  imdb  3 2796ms snapshot index imdb       snap_1   85    2.4%    12048 7.2%
  imdb  4  819ms snapshot init  imdb       snap_1   0     0.0%    0     0.0%
  --------------------------------------------------------------------------------
  
  
  