github.com/zuoyebang/bitalostable@v1.0.1-0.20240229032404-e3b99a834294/testdata/external_iterator (about)

     1  build 1
     2  set b b
     3  set c c
     4  ----
     5  
     6  build 2
     7  del-range c z
     8  ----
     9  
    10  # Test that a delete range in a more recent file shadows keys in an
    11  # earlier file.
    12  
    13  iter files=(1)
    14  first
    15  next
    16  next
    17  ----
    18  b: (b, .)
    19  c: (c, .)
    20  .
    21  
    22  iter files=(1)
    23  seek-ge bb
    24  next
    25  ----
    26  c: (c, .)
    27  .
    28  
    29  iter files=(2, 1) fwd-only
    30  first
    31  next
    32  ----
    33  b: (b, .)
    34  .
    35  
    36  build 3
    37  set a a
    38  set f f
    39  ----
    40  
    41  # Test including an even more recent file with point keys overlapping
    42  # the rangedel. Since the point keys are assigned a higher sequence
    43  # number, they should NOT be shadowed by the rangedel.
    44  
    45  iter files=(3, 2, 1) fwd-only
    46  first
    47  next
    48  next
    49  next
    50  ----
    51  a: (a, .)
    52  b: (b, .)
    53  f: (f, .)
    54  .
    55  
    56  # Test including range keys, and merging the range key state across
    57  # files. Range keys should be interleaved.
    58  
    59  build 4
    60  range-key-set a c @2 foo
    61  range-key-set c e @3 bar
    62  ----
    63  
    64  build 5
    65  range-key-del b d
    66  ----
    67  
    68  iter files=(5, 4, 3, 2, 1) fwd-only
    69  first
    70  next
    71  next
    72  next
    73  next
    74  ----
    75  a: (a, [a-b) @2=foo UPDATED)
    76  b: (b, . UPDATED)
    77  d: (., [d-e) @3=bar UPDATED)
    78  f: (f, . UPDATED)
    79  .
    80  
    81  # Test including range keys with empty spans and a merge in between. At no point
    82  # should an empty span be returned.
    83  
    84  build 6
    85  merge bb ac
    86  ----
    87  
    88  iter files=(6, 5, 4, 3, 2, 1)
    89  seek-lt c
    90  prev
    91  next
    92  next
    93  ----
    94  bb: (ac, .)
    95  b: (b, .)
    96  bb: (ac, .)
    97  d: (., [d-e) @3=bar UPDATED)
    98  
    99  iter files=(6, 5, 4, 3, 2, 1)
   100  seek-ge b
   101  next
   102  prev
   103  prev
   104  next
   105  next
   106  next
   107  ----
   108  b: (b, .)
   109  bb: (ac, .)
   110  b: (b, .)
   111  a: (a, [a-b) @2=foo UPDATED)
   112  b: (b, . UPDATED)
   113  bb: (ac, .)
   114  d: (., [d-e) @3=bar UPDATED)
   115  
   116  # Test range keys that overlap each other with identical state. These
   117  # should be defragmented and exposed as a single range key.
   118  
   119  reset
   120  ----
   121  
   122  build ag
   123  range-key-set a g @5 foo
   124  ----
   125  
   126  build ek
   127  range-key-set e k @5 foo
   128  ----
   129  
   130  iter files=(ag, ek) fwd-only
   131  first
   132  next
   133  ----
   134  a: (., [a-k) @5=foo UPDATED)
   135  .
   136  
   137  # Test range-key masking by creating points, some with suffixes above
   138  # the range key's suffix, some with suffixes below the range key's
   139  # suffix.
   140  
   141  build points
   142  set a@4 v
   143  set c@2 v
   144  set d@9 v
   145  set e@5 v
   146  set k@3 v
   147  set p@4 v
   148  ----
   149  
   150  iter files=(points, ag, ek) mask-suffix=@7 fwd-only
   151  first
   152  next
   153  next
   154  next
   155  next
   156  next
   157  ----
   158  a: (., [a-k) @5=foo UPDATED)
   159  d@9: (v, [a-k) @5=foo)
   160  e@5: (v, [a-k) @5=foo)
   161  k@3: (v, . UPDATED)
   162  p@4: (v, .)
   163  .
   164  
   165  # Test that 'stacked' range keys (eg, multiple defined over the same keyspan at
   166  # varying suffixes) work  as expected.
   167  
   168  build stacked
   169  range-key-set a k @4 bar
   170  range-key-set a k @1 bax
   171  ----
   172  
   173  iter files=(points, ag, ek, stacked) fwd-only
   174  first
   175  next
   176  ----
   177  a: (., [a-k) @5=foo, @4=bar, @1=bax UPDATED)
   178  a@4: (v, [a-k) @5=foo, @4=bar, @1=bax)
   179  
   180  # Test mutating the external iterator's options through SetOptions.
   181  
   182  iter files=(points, ag, ek) fwd-only
   183  set-options key-types=point
   184  first
   185  next
   186  set-options lower=e upper=p
   187  first
   188  next
   189  ----
   190  .
   191  a@4:v
   192  c@2:v
   193  .
   194  e@5:v
   195  k@3:v