############################################

#  RUN PARAMETERS

# stress run WT-5353

############################################

auto_throttle=1

firstfit=0

bitcnt=3

bloom=1

bloom_bit_count=45

bloom_hash_count=20

bloom_oldest=0

cache=59

checkpoints=1

checksum=off

chunk_size=1

compaction=0

compression=zlib

data_extend=0

data_source=file

delete_pct=42

dictionary=0

evict_max=5

file_type=variable-length column-store

backups=0

huffman_key=0

huffman_value=0

insert_pct=11

internal_key_truncation=1

internal_page_max=10

isolation=read-uncommitted

key_gap=16

key_max=49

key_min=13

leak_memory=0

leaf_page_max=17

logging=1

merge_max=17

merge_threads=2

mmap=1

ops=100000

prefix_compression=1

prefix_compression_min=2

repeat_data_pct=15

reverse=0

rows=100000

runs=100

split_pct=65

statistics=0

threads=8

value_max=209

value_min=0

wiredtiger_config=

write_pct=41

############################################

(gdb) where

#0  0x00000000004bc91d in __wt_bt_write (session=0x251e400, 

    buf=0x7fd71819eb58, addr=0x7fd757ffe6f0 "\030", addr_sizep=0x7fd757ffe7f8, 

    checkpoint=0, compressed=1) at ../src/btree/bt_io.c:160

WT-1  0x00000000004715f8 in __rec_split_write (session=0x251e400, 

    r=0x7fd71819eb40, bnd=0x7fd7180b6ce0, buf=0x7fd71819eb58, last_block=1)

    at ../src/btree/rec_write.c:2786

WT-2  0x0000000000470ba9 in __rec_split_finish_std (session=0x251e400, 

    r=0x7fd71819eb40) at ../src/btree/rec_write.c:2501

WT-3  0x0000000000470c71 in __rec_split_finish (session=0x251e400, 

    r=0x7fd71819eb40) at ../src/btree/rec_write.c:2532

WT-4  0x000000000047527b in __rec_row_leaf (session=0x251e400, r=0x7fd71819eb40, 

    page=0x2554cd0, salvage=0x0) at ../src/btree/rec_write.c:4493

WT-5  0x000000000046d085 in __wt_rec_write (session=0x251e400, ref=0x2554c90, 

    salvage=0x0, flags=0) at ../src/btree/rec_write.c:411

WT-6  0x00000000004605b4 in __sync_file (session=0x251e400, syncop=8)

    at ../src/btree/bt_sync.c:135

WT-7  0x0000000000460aa7 in __wt_cache_op (session=0x251e400, 

    ckptbase=0x7fd71804dd00, op=8) at ../src/btree/bt_sync.c:354

WT-8  0x000000000044b4e4 in __checkpoint_worker (session=0x251e400, 

    cfg=0x7fd757ffed70, is_checkpoint=1) at ../src/txn/txn_ckpt.c:841

WT-9  0x000000000044b72f in __wt_checkpoint (session=0x251e400, 

    cfg=0x7fd757ffed70) at ../src/txn/txn_ckpt.c:899

WT-10 0x000000000044a620 in __wt_txn_checkpoint (session=0x251e400, 

    cfg=0x7fd757ffed70) at ../src/txn/txn_ckpt.c:402

WT-11 0x0000000000440b1d in __session_checkpoint (wt_session=0x251e400, 

    config=0x0) at ../src/session/session_api.c:793

WT-12 0x0000000000406cc5 in ops (arg=0x2544600) at ../../../test/format/ops.c:289

WT-13 0x000000339e807c53 in start_thread (arg=0x7fd757fff700)

    at pthread_create.c:308

WT-14 0x000000339e0f5dbd in clone ()

    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

(gdb) frame 0

#0  0x00000000004bc91d in __wt_bt_write (session=0x251e400, 

    buf=0x7fd71819eb58, addr=0x7fd757ffe6f0 "\030", addr_sizep=0x7fd757ffe7f8, 

    checkpoint=0, compressed=1) at ../src/btree/bt_io.c:160

160			WT_ERR(btree->compressor->decompress(

(gdb) p btree->compressor

$12 = (WT_COMPRESSOR *) 0x0

(gdb) p btree->dhandle->name

$13 = 0x2548bf0 "file:WiredTiger.wt"

(gdb) frame 1

WT-1  0x00000000004715f8 in __rec_split_write (session=0x251e400, 

    r=0x7fd71819eb40, bnd=0x7fd7180b6ce0, buf=0x7fd71819eb58, last_block=1)

    at ../src/btree/rec_write.c:2786

2786		WT_ERR(__wt_bt_write(session,

(gdb) p *bnd

$14 = {start = 0x7fd71819ee28 "!file:wt", recno = 0, entries = 2, addr = {

    addr = 0x0, size = 0 '\000', type = 3 '\003', reuse = 0 '\000'}, 

  size = 1629, cksum = 0, dsk = 0x0, skip = 0x0, skip_next = 0, 

  skip_allocated = 0, key = {data = 0x0, size = 0, flags = 0, mem = 0x0, 

    memsize = 0}, already_compressed = 1}

#ifdef HAVE_DIAGNOSTIC

        /*

         * We're passed a table's disk image.  Decompress if necessary and

         * verify the image.  Always check the in-memory length for accuracy.

         */

        dsk = buf->mem;

        if (compressed) {

                WT_ERR(__wt_scr_alloc(session, dsk->mem_size, &tmp));

                memcpy(tmp->mem, buf->data, WT_BLOCK_COMPRESS_SKIP);

                WT_ERR(btree->compressor->decompress(