50: file, variable-length column-store
[1420229849:916566][30371:0x7f6d8ffff700], t, file:wt, session.checkpoint: ../src/reconcile/rec_write.c, 3202: state == WT_CHILD_MODIFIED

WT-3  0x0000000000465684 in __wt_assert (session=0x101d600, error=0, file_name=0x678833 "../src/reconcile/rec_write.c", line_number=3202, fmt=0x67868a "%s")
    at ../src/support/err.c:447
WT-4  0x000000000044f50b in __rec_col_int (session=0x101d600, r=0x7f6cf438c6e0, page=0x105b710) at ../src/reconcile/rec_write.c:3202
WT-5  0x0000000000449fa1 in __wt_reconcile (session=0x101d600, ref=0x105b6d0, salvage=0x0, flags=0) at ../src/reconcile/rec_write.c:400
WT-6  0x000000000048f57d in __sync_file (session=0x101d600, syncop=1) at ../src/btree/bt_sync.c:135
WT-7  0x000000000048f79d in __wt_cache_op (session=0x101d600, ckptbase=0x7f6cf43035f0, op=1) at ../src/btree/bt_sync.c:222
WT-8  0x000000000046ed3a in __checkpoint_worker (session=0x101d600, cfg=0x7f6d8fffed80, is_checkpoint=1) at ../src/txn/txn_ckpt.c:886
WT-9  0x000000000046efb2 in __wt_checkpoint (session=0x101d600, cfg=0x7f6d8fffed80) at ../src/txn/txn_ckpt.c:951
WT-10 0x000000000046cfd2 in __checkpoint_apply (session=0x101d600, cfg=0x7f6d8fffed80, op=0x46ef0b <__wt_checkpoint>) at ../src/txn/txn_ckpt.c:183
WT-11 0x000000000046db47 in __wt_txn_checkpoint (session=0x101d600, cfg=0x7f6d8fffed80) at ../src/txn/txn_ckpt.c:403
WT-12 0x0000000000462346 in __session_checkpoint (wt_session=0x101d600, config=0x7f6d8fffede0 "name=thread-3") at ../src/session/session_api.c:895
WT-13 0x000000000040ff96 in ops (arg=0x1085d90) at ../../../test/format/ops.c:341
WT-14 0x0000003f17e07ee5 in start_thread (arg=0x7f6d8ffff700) at pthread_create.c:309
WT-3  0x0000000000465684 in __wt_assert (session=0x101d600, error=0, file_name=0x678833 "../src/reconcile/rec_write.c", line_number=3202, fmt=0x67868a "%s")
    at ../src/support/err.c:447
WT-4  0x000000000044f50b in __rec_col_int (session=0x101d600, r=0x7f6cf438c6e0, page=0x105b710) at ../src/reconcile/rec_write.c:3202
WT-5  0x0000000000449fa1 in __wt_reconcile (session=0x101d600, ref=0x105b6d0, salvage=0x0, flags=0) at ../src/reconcile/rec_write.c:400
WT-6  0x000000000048f57d in __sync_file (session=0x101d600, syncop=1) at ../src/btree/bt_sync.c:135
WT-7  0x000000000048f79d in __wt_cache_op (session=0x101d600, ckptbase=0x7f6cf43035f0, op=1) at ../src/btree/bt_sync.c:222
WT-8  0x000000000046ed3a in __checkpoint_worker (session=0x101d600, cfg=0x7f6d8fffed80, is_checkpoint=1) at ../src/txn/txn_ckpt.c:886
WT-9  0x000000000046efb2 in __wt_checkpoint (session=0x101d600, cfg=0x7f6d8fffed80) at ../src/txn/txn_ckpt.c:951
WT-10 0x000000000046cfd2 in __checkpoint_apply (session=0x101d600, cfg=0x7f6d8fffed80, op=0x46ef0b <__wt_checkpoint>) at ../src/txn/txn_ckpt.c:183
WT-11 0x000000000046db47 in __wt_txn_checkpoint (session=0x101d600, cfg=0x7f6d8fffed80) at ../src/txn/txn_ckpt.c:403
WT-12 0x0000000000462346 in __session_checkpoint (wt_session=0x101d600, config=0x7f6d8fffede0 "name=thread-3") at ../src/session/session_api.c:895
WT-13 0x000000000040ff96 in ops (arg=0x1085d90) at ../../../test/format/ops.c:341
WT-14 0x0000003f17e07ee5 in start_thread (arg=0x7f6d8ffff700) at pthread_create.c:309

(gdb) p state
$2 = 1
[WT_CHILD_IGNORE]
(gdb) p *ref
$3 = {page = 0x7f6d2c14e4d0, home = 0x105b710, ref_hint = 2235, state = WT_REF_MEM, addr = 0x0, key = {recno = 120921, ikey = 0x1d859}, page_del = 0x0}
(gdb) p *page
$4 = {u = {intl = {recno = 91014, parent_ref = 0x105b6d0, __index = 0x7f6d2c3b0810}, row = {d = 0x16386, ins = 0x105b6d0, upd = 0x7f6d2c3b0810, entries = 0}, 
    col_fix = {recno = 91014, bitf = 0x105b6d0 "\020\267\005\001", entries = 742066192}, col_var = {recno = 91014, d = 0x105b6d0, repeats = 0x7f6d2c3b0810, 
      nrepeats = 0, entries = 0}}, dsk = 0x105b800, modify = 0x7f6d0c368d90, read_gen = 202, memory_footprint = 237213, type = 3 '\003', flags_atomic = 18 '\022'}
(gdb) p *child
$5 = {u = {intl = {recno = 120921, parent_ref = 0x7f6d2c14e518, __index = 0x7f6d2c14e590}, row = {d = 0x1d859, ins = 0x7f6d2c14e518, upd = 0x7f6d2c14e590, 
      entries = 4}, col_fix = {recno = 120921, bitf = 0x7f6d2c14e518 "(", entries = 739566992}, col_var = {recno = 120921, d = 0x7f6d2c14e518, 
      repeats = 0x7f6d2c14e590, nrepeats = 4, entries = 25}}, dsk = 0x7f6d2c39ffe0, modify = 0x7f6d2c14e660, read_gen = 291, memory_footprint = 1589, 
  type = 4 '\004', flags_atomic = 2 '\002'}
(gdb) p *r
$7 = {ref = 0x105b6d0, page = 0x105b710, flags = 0, dsk = {data = 0x7f6cf40d8c00, size = 0, flags = 1, mem = 0x7f6cf40d8c00, memsize = 33280}, max_txn = 177851, 
  skipped_txn = 177859, orig_write_gen = 350, leave_dirty = 0, raw_compression = 0, raw_max_slots = 0, raw_entries = 0x0, raw_offsets = 0x0, raw_recnos = 0x0, 
  raw_destination = {data = 0x0, size = 0, flags = 1, mem = 0x0, memsize = 0}, ovfl_items = 0, all_empty_value = 1, any_empty_value = 0, page_size = 32768, 
  page_size_orig = 32768, split_size = 15360, bnd = 0x7f6cf4050170, bnd_next = 3, bnd_next_max = 541, bnd_entries = 640, bnd_allocated = 81920, 
  total_entries = 2096, bnd_state = SPLIT_TRACKING_OFF, recno = 120921, entries = 277, first_free = 0x7f6cf40d9c70 "\343\001U", space_avail = 11152, skip = 0x0, 
  skip_next = 0, skip_allocated = 0, cell_zero = 0, dictionary = 0x0, dictionary_next = 0, dictionary_slots = 0, dictionary_head = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 
    0x0, 0x0, 0x0, 0x0}, k = {buf = {data = 0x0, size = 0, flags = 0, mem = 0x0, memsize = 0}, cell = {__chunk = '\000' <repeats 15 times>}, cell_len = 0, 
    len = 0}, v = {buf = {data = 0x7f6d2c14e470, size = 9, flags = 0, mem = 0x7f6cf41043a0, memsize = 11}, cell = {
      __chunk = "$\343\001\270\003\211\000\000\000\000\000\000\000\000\000"}, cell_len = 6, len = 15}, cur = 0x7f6cf438c8f8, _cur = {data = 0x0, size = 0, 
    flags = 0, mem = 0x0, memsize = 0}, last = 0x7f6cf438c928, _last = {data = 0x7f6d181789ef, size = 17, flags = 0, mem = 0x0, memsize = 0}, 
  key_pfx_compress = 0, key_pfx_compress_conf = 0, key_sfx_compress = 0, key_sfx_compress_conf = 0, is_bulk_load = 0, salvage = 0x0, tested_ref_state = 3}
(gdb) p/x r->flags
$8 = 0x0
(gdb) p *ref->page->modify
$9 = {disk_snap_min = 0, rec_max_txn = 0, first_dirty_txn = 177812, update_txn = 0, inmem_split_txn = 0, bytes_dirty = 1589, u1 = {replace = {addr = 0x0, 
      size = 0 '\000', type = 0 '\000', reuse = 0 '\000'}, m = {multi = 0x0, multi_entries = 0}}, u2 = {intl = {root_split = 0x0, split_txn = 140106867730128}, 
    leaf = {append = 0x0, update = 0x7f6d2c14e6d0}}, ovfl_track = 0x0, write_gen = 1, page_lock = 3 '\003', flags = 0 '\000'}

         * but, if we're forced to instantiate
         * a deleted child page and it's never modified, we end up here with
         * a page that has a modify structure, no modifications, and no disk
         * address.  Ignore those pages, they're not modified and there is no
         * reason to write the cell.

############################################
#  RUN PARAMETERS
############################################
abort=0
auto_throttle=1
firstfit=0
bitcnt=1
bloom=1
bloom_bit_count=57
bloom_hash_count=12
bloom_oldest=0
cache=73
checkpoints=1
checksum=uncompressed
chunk_size=7
compaction=0
compression=none
data_extend=0
data_source=file
delete_pct=45
dictionary=0
evict_max=5
file_type=variable-length column-store
backups=0
huffman_key=0
huffman_value=0
insert_pct=10
internal_key_truncation=1
internal_page_max=15
isolation=read-uncommitted
key_gap=18
key_max=49
key_min=13
leak_memory=0
leaf_page_max=9
logging=0
logging_archive=0
logging_prealloc=0
logging=0
lsm_worker_threads=4
merge_max=9
mmap=1
ops=100000
prefix_compression=1
prefix_compression_min=2
repeat_data_pct=20
reverse=0
rows=100000
runs=100
split_pct=46
statistics=0
threads=7
timer=0
value_max=2694
value_min=14
wiredtiger_config=
write_pct=42
############################################