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  1. WiredTiger
  2. WT-14565

Fix test/format for disagg: "value time window has a start time before its parent's oldest start time"

    • Type: Icon: Bug Bug
    • Resolution: Unresolved
    • Priority: Icon: Major - P3 Major - P3
    • None
    • Affects Version/s: None
    • Component/s: Test Format
    • None
    • Storage Engines
    • None
    • None
    • 0

      Observed occasionally when running test/format with changes from WT-14530. This happens more often if the time between checkpoints is increased.

      [1746551911:850246][12241:0xfffff7ff5020], t, file:wt.wt_stable, WT_SESSION.checkpoint: [WT_VERB_DEFAULT][ERROR]: __time_value_validate_parent, 410: value time window has a start time before its parent's oldest start time; time window start: (0, 0)/(0, 0)/0 | stop: (0, 0)/(4294967295, 4294967295)/18446744073709551605, parent newest_durable: (0, 154570)/(0, 0) | oldest_start: (0, 154570)/182882 | newest_stop: (4294967295, 4294967295)/18446744073709551605: Invalid argument
      [1746551911:850280][12241:0xfffff7ff5020], t, file:wt.wt_stable, WT_SESSION.checkpoint: [WT_VERB_DEFAULT][ERROR]: __verify_dsk_value_validity, 254: cell 4294967295 on page at [reconcile-image] failed timestamp validation: Invalid argument
      [1746551911:850292][12241:0xfffff7ff5020], t, file:wt.wt_stable, WT_SESSION.checkpoint: [WT_VERB_DEFAULT][ERROR]: __rec_split_write, 2746: WiredTiger assertion failed: 'verify_image == 0 || __wt_verify_dsk_image(session, "[reconcile-image]", chunk->image.data, 0, &multi->addr, 0x2u) == 0'. Expression returned false
      [1746551911:850300][12241:0xfffff7ff5020], t, file:wt.wt_stable, WT_SESSION.checkpoint: [WT_VERB_DEFAULT][ERROR]: __wt_abort, 28: aborting WiredTiger library

      Here's the CONFIG:

      ############################################
      #  RUN PARAMETERS: V3
      ############################################
      assert.read_timestamp=0
      background_compact=0
      background_compact.free_space_target=24
      backup=0
      backup.incremental=off
      backup.incr_granularity=4147
      block_cache=0
      block_cache.cache_on_checkpoint=0
      block_cache.cache_on_writes=0
      block_cache.size=78
      btree.compression=none
      btree.dictionary=0
      btree.internal_key_truncation=1
      btree.internal_page_max=17
      btree.key_max=80
      btree.key_min=17
      btree.leaf_page_max=9
      btree.memory_page_max=3
      btree.prefix_len=0
      btree.prefix_compression=0
      btree.prefix_compression_min=8
      btree.reverse=0
      btree.split_pct=68
      btree.value_max=1708
      btree.value_min=6
      buffer_alignment=0
      cache=2048
      cache.evict_max=4
      cache.eviction_dirty_target=0
      cache.eviction_dirty_trigger=0
      cache.minimum=0
      checkpoint=on
      checkpoint.precise=1
      checkpoint.log_size=154
      checkpoint.wait=9
      chunk_cache=0
      chunk_cache.capacity=480
      chunk_cache.chunk_size=3
      chunk_cache.storage_path=off
      chunk_cache.type=off
      compact.free_space_target=48
      debug.background_compact=0
      debug.checkpoint_retention=10
      debug.cursor_reposition=0
      debug.eviction=0
      debug.log_retention=10
      debug.realloc_exact=0
      debug.realloc_malloc=0
      debug.slow_checkpoint=0
      debug.table_logging=0
      debug.update_restore_evict=0
      disagg.page_log=palm
      disagg.enabled=1
      disagg.layered=1
      disk.checksum=off
      disk.data_extend=1
      disk.direct_io=0
      disk.encryption=none
      disk.firstfit=0
      disk.mmap=1
      disk.mmap_all=0
      file_manager.close_handle_minimum=28
      file_manager.close_idle_time=0
      file_manager.close_scan_interval=29
      format.abort=0
      format.independent_thread_rng=1
      format.major_timeout=0
      import=0
      logging=0
      logging.compression=none
      logging.file_max=240010
      logging.prealloc=0
      logging.remove=1
      ops.alter=0
      ops.compaction=0
      ops.hs_cursor=0
      ops.pareto=0
      ops.pareto.skew=32
      ops.pct.delete=9
      ops.pct.insert=42
      ops.pct.modify=0
      ops.pct.read=16
      ops.pct.write=33
      ops.bound_cursor=0
      ops.prepare=0
      ops.random_cursor=0
      ops.salvage=0
      ops.throttle=0
      ops.throttle.sleep_us=180772
      ops.truncate=0
      ops.verify=0
      prefetch=0
      quiet=0
      random.data_seed=1388560
      random.extra_seed=6719399
      runs.in_memory=0
      runs.mirror=0
      runs.ops=351839
      runs.predictable_replay=0
      runs.rows=35953
      runs.source=layered
      runs.threads=21
      runs.timer=30
      runs.type=row-store
      runs.verify_failure_dump=0
      statistics.mode=fast
      statistics_log.sources=off
      stress.aggressive_stash_free=0
      stress.aggressive_sweep=0
      stress.checkpoint=0
      stress.checkpoint_evict_page=0
      stress.checkpoint_prepare=0
      stress.compact_slow=0
      stress.evict_reposition=0
      stress.failpoint_eviction_split=0
      stress.failpoint_hs_delete_key_from_ts=1
      stress.hs_checkpoint_delay=0
      stress.hs_search=0
      stress.hs_sweep=0
      stress.prefetch_delay=0
      stress.prepare_resolution_1=0
      stress.sleep_before_read_overflow_onpage=0
      stress.split_1=0
      stress.split_2=0
      stress.split_3=0
      stress.split_4=0
      stress.split_5=0
      stress.split_6=0
      stress.split_7=0
      stress.split_8=0
      tiered_storage.flush_frequency=0
      tiered_storage.storage_source=off
      transaction.implicit=0
      transaction.operation_timeout_ms=2000
      transaction.timestamps=1
      wiredtiger.config=off
      wiredtiger.rwlock=1
      wiredtiger.leak_memory=0
      

            Assignee:
            backlog-server-storage-engines [DO NOT USE] Backlog - Storage Engines Team
            Reporter:
            donald.anderson@mongodb.com Donald Anderson
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            Watchers:
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              Created:
              Updated: