flaky test: `RegionBlockReaderTest.OverflowColumnRowV2`

[JaySon-Huang]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

2. What did you expect to see? (Required)

3. What did you see instead (Required)

[1474/3344] RegionBlockReaderTest.OverflowColumnRowV2 (598 ms)
[2026/07/31 16:20:15.917 +08:00] [INFO] [LocalIndexerScheduler.cpp:62] ["Initialized LocalIndexerScheduler, pool_size=1, memory_limit_mb=0.0"] [thread_id=1]
[2026/07/31 16:20:15.917 +08:00] [INFO] [BackgroundProcessingPool.cpp:98] ["Create BackgroundProcessingPool, prefix=bg- n_threads=2"] [thread_id=1]
[2026/07/31 16:20:15.917 +08:00] [INFO] [BackgroundProcessingPool.cpp:98] ["Create BackgroundProcessingPool, prefix=bg-block- n_threads=2"] [thread_id=1]
[2026/07/31 16:20:15.917 +08:00] [INFO] [PathCapacityMetrics.cpp:94] ["Init capacity [path=/tmp-memfs/tiflash-tests/tmp/] [capacity=0.00 B]"] [thread_id=1]
[2026/07/31 16:20:15.918 +08:00] [INFO] [PageStorageImpl.cpp:54] ["PageStorageImpl start. Config{ PageStorageConfig {blob_file_limit_size: 268435456, blob_spacemap_type: 2, blob_heavy_gc_valid_rate: 0.500, blob_heavy_gc_valid_rate_raft_data: 0.050, blob_block_alignment_bytes: 0, wal_roll_size: 2097152, wal_max_persisted_log_files: 4} }"] [source=__global__.log] [thread_id=1]
[2026/07/31 16:20:15.918 +08:00] [INFO] [PageStorageImpl.cpp:54] ["PageStorageImpl start. Config{ PageStorageConfig {blob_file_limit_size: 268435456, blob_spacemap_type: 2, blob_heavy_gc_valid_rate: 0.500, blob_heavy_gc_valid_rate_raft_data: 0.050, blob_block_alignment_bytes: 0, wal_roll_size: 2097152, wal_max_persisted_log_files: 4} }"] [source=__global__.data] [thread_id=1]
[2026/07/31 16:20:15.918 +08:00] [INFO] [PageStorageImpl.cpp:54] ["PageStorageImpl start. Config{ PageStorageConfig {blob_file_limit_size: 268435456, blob_spacemap_type: 2, blob_heavy_gc_valid_rate: 0.500, blob_heavy_gc_valid_rate_raft_data: 0.050, blob_block_alignment_bytes: 0, wal_roll_size: 2097152, wal_max_persisted_log_files: 4} }"] [source=__global__.meta] [thread_id=1]
[2026/07/31 16:20:15.918 +08:00] [INFO] [BlobStore.cpp:130] ["Ignore not blob file, dir=/tmp-memfs/tiflash-tests/tmp/page/log file=wal err_msg="] [source=__global__.log] [thread_id=1]
<jemalloc>: /home/jenkins/agent/workspace/tiflash-build-common/tiflash/contrib/jemalloc/src/arena.c:138: Failed assertion: "nmalloc >= ndalloc"
Received signal Aborted
[2026/07/31 16:20:15.918 +08:00] [INFO] [PageDirectoryFactory.cpp:68] ["PageDirectory restored, max_page_id=0 max_applied_ver=0"] [source=__global__.log] [thread_id=1]
<jemalloc>: Should own 0 locks of rank >= 1: ctl(2)
[1474/3344] RegionBlockReaderTest.OverflowColumnRowV2 returned/aborted with exit code -6 (598 ms)

4. What is your TiFlash version? (Required)

1321ccf

[JaySon-Huang]

SegmentReplaceDataSimpleTest.DMFileGCIsUnchanged from #11033

[1350/3344] SegmentReplaceDataSimpleTest.DMFileGCIsUnchanged (551 ms)
[2026/08/10 23:19:12.883 +08:00] [INFO] [LocalIndexerScheduler.cpp:62] ["Initialized LocalIndexerScheduler, pool_size=1, memory_limit_mb=0.0"] [thread_id=1]
[2026/08/10 23:19:12.883 +08:00] [INFO] [BackgroundProcessingPool.cpp:98] ["Create BackgroundProcessingPool, prefix=bg- n_threads=2"] [thread_id=1]
[2026/08/10 23:19:12.883 +08:00] [INFO] [BackgroundProcessingPool.cpp:98] ["Create BackgroundProcessingPool, prefix=bg-block- n_threads=2"] [thread_id=1]
[2026/08/10 23:19:12.883 +08:00] [INFO] [PathCapacityMetrics.cpp:94] ["Init capacity [path=/tmp-memfs/tiflash-tests/tmp/] [capacity=0.00 B]"] [thread_id=1]
[2026/08/10 23:19:12.883 +08:00] [INFO] [PageStorageImpl.cpp:54] ["PageStorageImpl start. Config{ PageStorageConfig {blob_file_limit_size: 268435456, blob_spacemap_type: 2, blob_heavy_gc_valid_rate: 0.500, blob_heavy_gc_valid_rate_raft_data: 0.050, blob_block_alignment_bytes: 0, wal_roll_size: 2097152, wal_max_persisted_log_files: 4} }"] [source=__global__.log] [thread_id=1]
[2026/08/10 23:19:12.883 +08:00] [INFO] [PageStorageImpl.cpp:54] ["PageStorageImpl start. Config{ PageStorageConfig {blob_file_limit_size: 268435456, blob_spacemap_type: 2, blob_heavy_gc_valid_rate: 0.500, blob_heavy_gc_valid_rate_raft_data: 0.050, blob_block_alignment_bytes: 0, wal_roll_size: 2097152, wal_max_persisted_log_files: 4} }"] [source=__global__.data] [thread_id=1]
[2026/08/10 23:19:12.883 +08:00] [INFO] [PageStorageImpl.cpp:54] ["PageStorageImpl start. Config{ PageStorageConfig {blob_file_limit_size: 268435456, blob_spacemap_type: 2, blob_heavy_gc_valid_rate: 0.500, blob_heavy_gc_valid_rate_raft_data: 0.050, blob_block_alignment_bytes: 0, wal_roll_size: 2097152, wal_max_persisted_log_files: 4} }"] [source=__global__.meta] [thread_id=1]
[2026/08/10 23:19:12.884 +08:00] [INFO] [BlobStore.cpp:130] ["Ignore not blob file, dir=/tmp-memfs/tiflash-tests/tmp/page/log file=wal err_msg="] [source=__global__.log] [thread_id=1]
[2026/08/10 23:19:12.884 +08:00] [INFO] [PageDirectoryFactory.cpp:68] ["PageDirectory restored, max_page_id=0 max_applied_ver=0"] [source=__global__.log] [thread_id=1]
[2026/08/10 23:19:12.884 +08:00] [INFO] [BlobStore.cpp:130] ["Ignore not blob file, dir=/tmp-memfs/tiflash-tests/tmp/page/data file=wal err_msg="] [source=__global__.data] [thread_id=1]
[2026/08/10 23:19:12.885 +08:00] [INFO] [PageDirectoryFactory.cpp:68] ["PageDirectory restored, max_page_id=0 max_applied_ver=0"] [source=__global__.data] [thread_id=1]
[2026/08/10 23:19:12.885 +08:00] [INFO] [BlobStore.cpp:130] ["Ignore not blob file, dir=/tmp-memfs/tiflash-tests/tmp/page/meta file=wal err_msg="] [source=__global__.meta] [thread_id=1]
[2026/08/10 23:19:12.885 +08:00] [INFO] [PageDirectoryFactory.cpp:68] ["PageDirectory restored, max_page_id=0 max_applied_ver=0"] [source=__global__.meta] [thread_id=1]
[2026/08/10 23:19:12.885 +08:00] [INFO] [TiFlashTestEnv.cpp:164] ["Storage mode : 2"] [thread_id=1]
[2026/08/10 23:19:12.885 +08:00] [INFO] [KVStore.cpp:67] ["KVStore inited, eager_raft_log_gc_enabled=false"] [thread_id=1]
[2026/08/10 23:19:12.885 +08:00] [INFO] [MinTSOScheduler.cpp:73] ["thread_hard_limit is 10000, thread_soft_limit is 5000, and active_set_soft_limit is 16 in MinTSOScheduler."] [thread_id=1]
[2026/08/10 23:19:12.885 +08:00] [INFO] [PageStorageImpl.cpp:54] ["PageStorageImpl start. Config{ PageStorageConfig {blob_file_limit_size: 268435456, blob_spacemap_type: 2, blob_heavy_gc_valid_rate: 0.500, blob_heavy_gc_valid_rate_raft_data: 0.050, blob_block_alignment_bytes: 0, wal_roll_size: 2097152, wal_max_persisted_log_files: 4} }"] [source=RegionPersister] [thread_id=1]
[2026/08/10 23:19:12.885 +08:00] [INFO] [BlobStore.cpp:130] ["Ignore not blob file, dir=/tmp-memfs/tiflash-tests/tmp/page/kvstore file=wal err_msg="] [source=RegionPersister] [thread_id=1]
[2026/08/10 23:19:12.885 +08:00] [INFO] [PageDirectoryFactory.cpp:68] ["PageDirectory restored, max_page_id=0 max_applied_ver=0"] [source=RegionPersister] [thread_id=1]
[2026/08/10 23:19:12.886 +08:00] [INFO] [RegionPersister.cpp:381] ["RegionPersister running. Current Run Mode is ONLY_V3"] [thread_id=1]
[2026/08/10 23:19:12.886 +08:00] [INFO] [RegionPersister.cpp:450] ["Restore regions done, total=0"] [thread_id=1]
[2026/08/10 23:19:12.886 +08:00] [INFO] [RegionTable.cpp:119] ["RegionTable restore start"] [thread_id=1]
[2026/08/10 23:19:12.886 +08:00] [INFO] [RegionTable.cpp:124] ["RegionTable restore end, n_tables=0"] [thread_id=1]
[2026/08/10 23:19:12.886 +08:00] [INFO] [SegmentReader.cpp:150] ["Create start, thread_count=4 cpus=[7, 5, 3, 1, 6, 4, 2, 0]"] [thread_id=1]
[2026/08/10 23:19:12.886 +08:00] [DEBUG] [CPU.cpp:146] ["sched_setaffinity succ, cpus=[7, 5, 3, 1, 6, 4, 2, 0]"] [thread_id=2]
[2026/08/10 23:19:12.887 +08:00] [INFO] [SegmentReader.cpp:155] ["Create end, thread_count=4 cpus=[7, 5, 3, 1, 6, 4, 2, 0]"] [thread_id=1]
[2026/08/10 23:19:12.887 +08:00] [INFO] [SegmentReader.cpp:205] ["SegmentReaderPoolManager inited, logical_cpu_cores=4 read_thread_count_scale=1 numa_nodes=[[7, 5, 3, 1, 6, 4, 2, 0]] number_of_readers=4"] [thread_id=1]
[2026/08/10 23:19:12.887 +08:00] [DEBUG] [CPU.cpp:146] ["sched_setaffinity succ, cpus=[7, 5, 3, 1, 6, 4, 2, 0]"] [thread_id=3]
[2026/08/10 23:19:12.887 +08:00] [DEBUG] [S3Common.cpp:318] ["Aws::InitAPI start"] [thread_id=1]
[2026/08/10 23:19:12.887 +08:00] [DEBUG] [CPU.cpp:146] ["sched_setaffinity succ, cpus=[7, 5, 3, 1, 6, 4, 2, 0]"] [thread_id=4]
<jemalloc>: /home/jenkins/agent/workspace/tiflash-build-common/tiflash/contrib/jemalloc/src/arena.c:138: Failed assertion: "nmalloc >= ndalloc"
Received signal Aborted
<jemalloc>: Should own 0 locks of rank >= 1: ctl(2)