github.com/cockroachdb/pebble@v0.0.0-20231214172447-ab4952c5f87b/sstable/testdata/readerstats_Pebblev3/iter (about)

     1  build print-layout=true
     2  c@10.SET.10:cAT10
     3  c@9.SET.9:cAT9
     4  c@8.SET.8:cAT8
     5  d@7.SET.9:dAT7
     6  e@39.SET.49:eAT39
     7  e@38.SET.48:eAT38
     8  e@37.SET.47:eAT37
     9  e@36.SET.46:eAT36
    10  e@35.SET.45:eAT35
    11  e@34.SET.44:eAT34
    12  e@33.SET.43:eAT33
    13  e@32.SET.42:eAT32
    14  e@31.SET.41:eAT31
    15  e@30.SET.40:eAT30
    16  e@29.SET.39:eAT29
    17  e@28.SET.38:eAT28
    18  e@27.SET.37:eAT27
    19  e@26.SET.36:eAT26
    20  ----
    21  index entries:
    22   f: size 228
    23  
    24  # Iterating across older versions and fetching the older version values.
    25  iter
    26  first
    27  stats
    28  next
    29  stats
    30  next
    31  stats
    32  next
    33  stats
    34  ----
    35  <c@10:10>
    36  {BlockBytes:251 BlockBytesInCache:0 BlockReadDuration:0s KeyBytes:0 ValueBytes:0 PointCount:0 PointsCoveredByRangeTombstones:0 SeparatedPointValue:{Count:0 ValueBytes:0 ValueBytesFetched:0}}
    37  <c@9:9>
    38  {BlockBytes:328 BlockBytesInCache:0 BlockReadDuration:0s KeyBytes:0 ValueBytes:0 PointCount:0 PointsCoveredByRangeTombstones:0 SeparatedPointValue:{Count:1 ValueBytes:4 ValueBytesFetched:4}}
    39  <c@8:8>
    40  {BlockBytes:328 BlockBytesInCache:0 BlockReadDuration:0s KeyBytes:0 ValueBytes:0 PointCount:0 PointsCoveredByRangeTombstones:0 SeparatedPointValue:{Count:2 ValueBytes:8 ValueBytesFetched:8}}
    41  <d@7:9>
    42  {BlockBytes:328 BlockBytesInCache:0 BlockReadDuration:0s KeyBytes:0 ValueBytes:0 PointCount:0 PointsCoveredByRangeTombstones:0 SeparatedPointValue:{Count:2 ValueBytes:8 ValueBytesFetched:8}}
    43  
    44  # seek-ge e@37 starts at the restart point at the beginning of the block and
    45  # iterates over 3 irrelevant separated versions before getting to e@37
    46  # (another separated version). Which is why the SeparatedPointValue count is
    47  # 4. Only the last separated version has its value fetched.
    48  iter
    49  seek-ge e@37
    50  stats
    51  next
    52  next
    53  next
    54  next
    55  stats
    56  ----
    57  <e@37:47>
    58  {BlockBytes:328 BlockBytesInCache:0 BlockReadDuration:0s KeyBytes:0 ValueBytes:0 PointCount:0 PointsCoveredByRangeTombstones:0 SeparatedPointValue:{Count:4 ValueBytes:18 ValueBytesFetched:5}}
    59  <e@36:46>
    60  <e@35:45>
    61  <e@34:44>
    62  <e@33:43>
    63  {BlockBytes:328 BlockBytesInCache:0 BlockReadDuration:0s KeyBytes:0 ValueBytes:0 PointCount:0 PointsCoveredByRangeTombstones:0 SeparatedPointValue:{Count:8 ValueBytes:38 ValueBytesFetched:25}}
    64  
    65  # seek-ge e@26 lands at the restart point e@26.
    66  iter
    67  seek-ge e@26
    68  stats
    69  prev
    70  stats
    71  prev
    72  stats
    73  ----
    74  <e@26:36>
    75  {BlockBytes:328 BlockBytesInCache:0 BlockReadDuration:0s KeyBytes:0 ValueBytes:0 PointCount:0 PointsCoveredByRangeTombstones:0 SeparatedPointValue:{Count:1 ValueBytes:5 ValueBytesFetched:5}}
    76  <e@27:37>
    77  {BlockBytes:328 BlockBytesInCache:0 BlockReadDuration:0s KeyBytes:0 ValueBytes:0 PointCount:0 PointsCoveredByRangeTombstones:0 SeparatedPointValue:{Count:2 ValueBytes:10 ValueBytesFetched:10}}
    78  <e@28:38>
    79  {BlockBytes:328 BlockBytesInCache:0 BlockReadDuration:0s KeyBytes:0 ValueBytes:0 PointCount:0 PointsCoveredByRangeTombstones:0 SeparatedPointValue:{Count:3 ValueBytes:15 ValueBytesFetched:15}}