github.com/cockroachdb/pebble@v1.1.2/internal/keyspan/testdata/merging_iter (about)

     1  # Test a single level.
     2  
     3  define
     4  a-c:{(#10,RANGEKEYSET,@5,apples) (#10,RANGEKEYDEL) (#8,RANGEKEYUNSET,@1) (#4,RANGEKEYSET,@3,bananas)}
     5  c-d:{(#4,RANGEKEYSET,@3,coconut)}
     6  e-f:{(#20,RANGEKEYSET,@5,pineapple) (#20,RANGEKEYSET,@3,guava)}
     7  h-j:{(#22,RANGEKEYDEL) (#21,RANGEKEYSET,@5,peaches) (#21,RANGEKEYSET,@3,starfruit)}
     8  l-m:{(#2,RANGEKEYUNSET,@9) (#2,RANGEKEYUNSET,@5)}
     9  q-z:{(#14,RANGEKEYSET,@9,mangos)}
    10  ----
    11  1 levels
    12  
    13  iter
    14  first
    15  next
    16  next
    17  next
    18  next
    19  next
    20  next
    21  ----
    22  a-c:{(#10,RANGEKEYSET,@5,apples) (#10,RANGEKEYDEL) (#8,RANGEKEYUNSET,@1) (#4,RANGEKEYSET,@3,bananas)}
    23  c-d:{(#4,RANGEKEYSET,@3,coconut)}
    24  e-f:{(#20,RANGEKEYSET,@5,pineapple) (#20,RANGEKEYSET,@3,guava)}
    25  h-j:{(#22,RANGEKEYDEL) (#21,RANGEKEYSET,@5,peaches) (#21,RANGEKEYSET,@3,starfruit)}
    26  l-m:{(#2,RANGEKEYUNSET,@9) (#2,RANGEKEYUNSET,@5)}
    27  q-z:{(#14,RANGEKEYSET,@9,mangos)}
    28  <nil>
    29  
    30  # Test snapshot filtering.
    31  
    32  define snapshot=12
    33  a-c:{(#10,RANGEKEYSET,@5,apples) (#10,RANGEKEYDEL) (#8,RANGEKEYUNSET,@1) (#4,RANGEKEYSET,@3,bananas)}
    34  c-d:{(#4,RANGEKEYSET,@3,coconut)}
    35  e-f:{(#20,RANGEKEYSET,@5,pineapple) (#20,RANGEKEYSET,@3,guava)}
    36  h-j:{(#22,RANGEKEYDEL) (#21,RANGEKEYSET,@5,peaches) (#21,RANGEKEYSET,@3,starfruit)}
    37  l-m:{(#2,RANGEKEYUNSET,@9) (#2,RANGEKEYUNSET,@5)}
    38  q-z:{(#14,RANGEKEYSET,@9,mangos)}
    39  ----
    40  1 levels
    41  
    42  iter
    43  first
    44  next
    45  next
    46  next
    47  next
    48  next
    49  next
    50  ----
    51  a-c:{(#10,RANGEKEYSET,@5,apples) (#10,RANGEKEYDEL) (#8,RANGEKEYUNSET,@1) (#4,RANGEKEYSET,@3,bananas)}
    52  c-d:{(#4,RANGEKEYSET,@3,coconut)}
    53  e-f:{}
    54  h-j:{}
    55  l-m:{(#2,RANGEKEYUNSET,@9) (#2,RANGEKEYUNSET,@5)}
    56  q-z:{}
    57  <nil>
    58  
    59  define
    60  b-d:{#10,RANGEKEYSET,@1,apples}
    61  e-h:{#8,RANGEKEYDEL}
    62  --
    63  a-c:{#3,RANGEKEYUNSET,@1}
    64  h-k:{#5,RANGEKEYDEL}
    65  ----
    66  2 levels
    67  
    68  iter
    69  first
    70  next
    71  next
    72  next
    73  next
    74  next
    75  ----
    76  a-b:{(#3,RANGEKEYUNSET,@1)}
    77  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
    78  c-d:{(#10,RANGEKEYSET,@1,apples)}
    79  e-h:{(#8,RANGEKEYDEL)}
    80  h-k:{(#5,RANGEKEYDEL)}
    81  <nil>
    82  
    83  iter
    84  last
    85  prev
    86  prev
    87  prev
    88  prev
    89  prev
    90  ----
    91  h-k:{(#5,RANGEKEYDEL)}
    92  e-h:{(#8,RANGEKEYDEL)}
    93  c-d:{(#10,RANGEKEYSET,@1,apples)}
    94  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
    95  a-b:{(#3,RANGEKEYUNSET,@1)}
    96  <nil>
    97  
    98  # Test changing directions at each iterator position, reverse to forward.
    99  iter
   100  last
   101  next
   102  last
   103  prev
   104  next
   105  ----
   106  h-k:{(#5,RANGEKEYDEL)}
   107  <nil>
   108  h-k:{(#5,RANGEKEYDEL)}
   109  e-h:{(#8,RANGEKEYDEL)}
   110  h-k:{(#5,RANGEKEYDEL)}
   111  
   112  iter
   113  last
   114  prev
   115  prev
   116  next
   117  ----
   118  h-k:{(#5,RANGEKEYDEL)}
   119  e-h:{(#8,RANGEKEYDEL)}
   120  c-d:{(#10,RANGEKEYSET,@1,apples)}
   121  e-h:{(#8,RANGEKEYDEL)}
   122  
   123  iter
   124  last
   125  prev
   126  prev
   127  prev
   128  next
   129  ----
   130  h-k:{(#5,RANGEKEYDEL)}
   131  e-h:{(#8,RANGEKEYDEL)}
   132  c-d:{(#10,RANGEKEYSET,@1,apples)}
   133  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   134  c-d:{(#10,RANGEKEYSET,@1,apples)}
   135  
   136  iter
   137  last
   138  prev
   139  prev
   140  prev
   141  prev
   142  next
   143  ----
   144  h-k:{(#5,RANGEKEYDEL)}
   145  e-h:{(#8,RANGEKEYDEL)}
   146  c-d:{(#10,RANGEKEYSET,@1,apples)}
   147  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   148  a-b:{(#3,RANGEKEYUNSET,@1)}
   149  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   150  
   151  iter
   152  last
   153  prev
   154  prev
   155  prev
   156  prev
   157  prev
   158  next
   159  ----
   160  h-k:{(#5,RANGEKEYDEL)}
   161  e-h:{(#8,RANGEKEYDEL)}
   162  c-d:{(#10,RANGEKEYSET,@1,apples)}
   163  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   164  a-b:{(#3,RANGEKEYUNSET,@1)}
   165  <nil>
   166  a-b:{(#3,RANGEKEYUNSET,@1)}
   167  
   168  # Test changing directions at each iterator position, forward to reverse.
   169  
   170  iter
   171  first
   172  prev
   173  first
   174  next
   175  prev
   176  ----
   177  a-b:{(#3,RANGEKEYUNSET,@1)}
   178  <nil>
   179  a-b:{(#3,RANGEKEYUNSET,@1)}
   180  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   181  a-b:{(#3,RANGEKEYUNSET,@1)}
   182  
   183  iter
   184  first
   185  next
   186  next
   187  prev
   188  ----
   189  a-b:{(#3,RANGEKEYUNSET,@1)}
   190  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   191  c-d:{(#10,RANGEKEYSET,@1,apples)}
   192  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   193  
   194  iter
   195  first
   196  next
   197  next
   198  next
   199  prev
   200  ----
   201  a-b:{(#3,RANGEKEYUNSET,@1)}
   202  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   203  c-d:{(#10,RANGEKEYSET,@1,apples)}
   204  e-h:{(#8,RANGEKEYDEL)}
   205  c-d:{(#10,RANGEKEYSET,@1,apples)}
   206  
   207  iter
   208  first
   209  next
   210  next
   211  next
   212  next
   213  next
   214  prev
   215  ----
   216  a-b:{(#3,RANGEKEYUNSET,@1)}
   217  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   218  c-d:{(#10,RANGEKEYSET,@1,apples)}
   219  e-h:{(#8,RANGEKEYDEL)}
   220  h-k:{(#5,RANGEKEYDEL)}
   221  <nil>
   222  h-k:{(#5,RANGEKEYDEL)}
   223  
   224  iter
   225  first
   226  next
   227  next
   228  next
   229  next
   230  prev
   231  ----
   232  a-b:{(#3,RANGEKEYUNSET,@1)}
   233  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   234  c-d:{(#10,RANGEKEYSET,@1,apples)}
   235  e-h:{(#8,RANGEKEYDEL)}
   236  h-k:{(#5,RANGEKEYDEL)}
   237  e-h:{(#8,RANGEKEYDEL)}
   238  
   239  # Test SeekGE. Note that MergingIter's SeekGE implements the FragmentIterator's
   240  # SeekGE semantics. It returns the first fragment that covers a key ≥ the search
   241  # key.
   242  
   243  iter
   244  seek-ge cc
   245  ----
   246  c-d:{(#10,RANGEKEYSET,@1,apples)}
   247  
   248  iter
   249  seek-ge 1
   250  seek-ge a
   251  seek-ge b
   252  seek-ge bb
   253  ----
   254  a-b:{(#3,RANGEKEYUNSET,@1)}
   255  a-b:{(#3,RANGEKEYUNSET,@1)}
   256  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   257  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   258  
   259  iter
   260  seek-ge c
   261  seek-ge cc
   262  seek-ge e
   263  seek-ge f
   264  ----
   265  c-d:{(#10,RANGEKEYSET,@1,apples)}
   266  c-d:{(#10,RANGEKEYSET,@1,apples)}
   267  e-h:{(#8,RANGEKEYDEL)}
   268  e-h:{(#8,RANGEKEYDEL)}
   269  
   270  iter
   271  seek-ge h
   272  seek-ge i
   273  seek-ge k
   274  seek-ge l
   275  ----
   276  h-k:{(#5,RANGEKEYDEL)}
   277  h-k:{(#5,RANGEKEYDEL)}
   278  <nil>
   279  <nil>
   280  
   281  # Test SeekLT. Note that MergingIter's SeekLT implements the FragmentIterator's
   282  # SeekLT semantics. It returns the first fragment with a Start key < the search
   283  # key, NOT the first fragment that covers a key < the search key.
   284  #
   285  # NB: seek-lt bb finds b-c#3.RANGEKEYUNSET (the last fragment with the bounds
   286  # [b,c), unlike the above seek-ge b which finds the first).
   287  
   288  iter
   289  seek-lt b
   290  ----
   291  a-b:{(#3,RANGEKEYUNSET,@1)}
   292  
   293  iter
   294  seek-lt 1
   295  seek-lt a
   296  seek-lt aa
   297  seek-lt b
   298  seek-lt bb
   299  seek-lt c
   300  ----
   301  <nil>
   302  <nil>
   303  a-b:{(#3,RANGEKEYUNSET,@1)}
   304  a-b:{(#3,RANGEKEYUNSET,@1)}
   305  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   306  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   307  
   308  iter
   309  seek-lt cc
   310  seek-lt d
   311  seek-lt dd
   312  seek-lt e
   313  seek-lt ee
   314  seek-lt h
   315  seek-lt hh
   316  seek-lt k
   317  seek-lt z
   318  ----
   319  c-d:{(#10,RANGEKEYSET,@1,apples)}
   320  c-d:{(#10,RANGEKEYSET,@1,apples)}
   321  c-d:{(#10,RANGEKEYSET,@1,apples)}
   322  c-d:{(#10,RANGEKEYSET,@1,apples)}
   323  e-h:{(#8,RANGEKEYDEL)}
   324  e-h:{(#8,RANGEKEYDEL)}
   325  h-k:{(#5,RANGEKEYDEL)}
   326  h-k:{(#5,RANGEKEYDEL)}
   327  h-k:{(#5,RANGEKEYDEL)}
   328  
   329  define
   330  a-f:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL)}
   331  k-s:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL)}
   332  ----
   333  1 levels
   334  
   335  iter
   336  first
   337  prev
   338  next
   339  ----
   340  a-f:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL)}
   341  <nil>
   342  a-f:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL)}
   343  
   344  iter
   345  last
   346  next
   347  prev
   348  ----
   349  k-s:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL)}
   350  <nil>
   351  k-s:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL)}
   352  
   353  define
   354  w-x:{(#5,RANGEKEYDEL) (#3,RANGEKEYDEL)}
   355  x-z:{(#5,RANGEKEYDEL)}
   356  --
   357  w-y:{(#4,RANGEKEYDEL) (#1,RANGEKEYDEL)}
   358  ----
   359  2 levels
   360  
   361  iter
   362  last
   363  next
   364  prev
   365  first
   366  prev
   367  next
   368  ----
   369  y-z:{(#5,RANGEKEYDEL)}
   370  <nil>
   371  y-z:{(#5,RANGEKEYDEL)}
   372  w-x:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL) (#3,RANGEKEYDEL) (#1,RANGEKEYDEL)}
   373  <nil>
   374  w-x:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL) (#3,RANGEKEYDEL) (#1,RANGEKEYDEL)}
   375  
   376  iter
   377  seek-ge x
   378  prev
   379  seek-ge xray
   380  prev
   381  ----
   382  x-y:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL) (#1,RANGEKEYDEL)}
   383  w-x:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL) (#3,RANGEKEYDEL) (#1,RANGEKEYDEL)}
   384  x-y:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL) (#1,RANGEKEYDEL)}
   385  w-x:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL) (#3,RANGEKEYDEL) (#1,RANGEKEYDEL)}
   386  
   387  define
   388  il-qb:{(#10,RANGEKEYDEL)}
   389  sn-wn:{(#10,RANGEKEYDEL)}
   390  --
   391  qt-kh:{(#9,RANGEKEYDEL) (#8,RANGEKEYDEL) (#7,RANGEKEYDEL)}
   392  ky-sv:{(#8,RANGEKEYDEL) (#7,RANGEKEYDEL)}
   393  --
   394  as-fz:{(#5,RANGEKEYDEL) (#4,RANGEKEYDEL)}
   395  hh-ir:{(#4,RANGEKEYDEL)}
   396  rf-yx:{(#4,RANGEKEYDEL)}
   397  ----
   398  3 levels
   399  
   400  iter
   401  seek-ge qp
   402  next
   403  next
   404  next
   405  next
   406  next
   407  seek-ge yz
   408  prev
   409  ----
   410  qb-rf:{(#8,RANGEKEYDEL) (#7,RANGEKEYDEL)}
   411  rf-sn:{(#8,RANGEKEYDEL) (#7,RANGEKEYDEL) (#4,RANGEKEYDEL)}
   412  sn-sv:{(#10,RANGEKEYDEL) (#8,RANGEKEYDEL) (#7,RANGEKEYDEL) (#4,RANGEKEYDEL)}
   413  sv-wn:{(#10,RANGEKEYDEL) (#4,RANGEKEYDEL)}
   414  wn-yx:{(#4,RANGEKEYDEL)}
   415  <nil>
   416  <nil>
   417  wn-yx:{(#4,RANGEKEYDEL)}
   418  
   419  # Test that empty spans from child iterators are preserved
   420  define
   421  b-d:{#10,RANGEKEYSET,@1,apples}
   422  e-f:{}
   423  g-h:{#8,RANGEKEYDEL}
   424  --
   425  a-c:{#3,RANGEKEYUNSET,@1}
   426  h-k:{#5,RANGEKEYDEL}
   427  k-m:{}
   428  ----
   429  2 levels
   430  
   431  iter
   432  first
   433  next
   434  next
   435  next
   436  next
   437  next
   438  next
   439  next
   440  ----
   441  a-b:{(#3,RANGEKEYUNSET,@1)}
   442  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   443  c-d:{(#10,RANGEKEYSET,@1,apples)}
   444  e-f:{}
   445  g-h:{(#8,RANGEKEYDEL)}
   446  h-k:{(#5,RANGEKEYDEL)}
   447  k-m:{}
   448  <nil>
   449  
   450  iter
   451  last
   452  prev
   453  prev
   454  prev
   455  prev
   456  prev
   457  prev
   458  prev
   459  ----
   460  k-m:{}
   461  h-k:{(#5,RANGEKEYDEL)}
   462  g-h:{(#8,RANGEKEYDEL)}
   463  e-f:{}
   464  c-d:{(#10,RANGEKEYSET,@1,apples)}
   465  b-c:{(#10,RANGEKEYSET,@1,apples) (#3,RANGEKEYUNSET,@1)}
   466  a-b:{(#3,RANGEKEYUNSET,@1)}
   467  <nil>