[2026-02-20 12:45:26.478048] INFO  New syslog file info: [address: "10.106.127.12:2882", observer version: OceanBase_CE 4.2.1.10, revision: 110000072024112010-28c1343085627e79a4f13c29121646bb889cf901, sysname: Linux, os release: 3.10.0-1160.el7.x86_64, machine: x86_64, tz GMT offset: 08:00]
[2026-02-20 12:51:50.778429] ERROR detect_palf_hang_failure_ (ob_failure_detector.cpp:356) [45611][T1002_Occam][T1002][Y0-0000000000000000-0-0] [lt=8][errcode=-4392] disk is hung(msg="clog disk may be hung, add failure event", clog_disk_hang_event={type:PROCESS HANG, module:LOG, info:clog disk hang, sen: 0, level:FATAL})
[2026-02-20 12:51:50.827761] ERROR detect_palf_hang_failure_ (ob_failure_detector.cpp:356) [45369][T1001_Occam][T1001][Y0-0000000000000000-0-0] [lt=8][errcode=-4392] disk is hung(msg="clog disk may be hung, add failure event", clog_disk_hang_event={type:PROCESS HANG, module:LOG, info:clog disk hang, sen: 0, level:FATAL})
[2026-02-20 12:51:50.994741] ERROR issue_dba_error (ob_log.cpp:1875) [45593][T1001_L0_G0][T1001][YB420A6A7F0F-00062EA73C5DB3D0-0-0] [lt=17][errcode=-4388] Unexpected internal error happen, please checkout the internal errcode(errcode=-4009, file="ob_tx_data_functor.cpp", line_no=391, info="unexpected io error")
[2026-02-20 12:51:51.145947] ERROR issue_dba_error (ob_log.cpp:1875) [45961][T1002_L5_G0][T1002][YB420A6A7F0B-00062EC6BB9FFFCF-0-0] [lt=15][errcode=-4388] Unexpected internal error happen, please checkout the internal errcode(errcode=-4009, file="ob_tx_data_functor.cpp", line_no=391, info="unexpected io error")
[2026-02-20 12:51:51.207392] ERROR issue_dba_error (ob_log.cpp:1875) [45591][T1001_L0_G0][T1001][YB420A6A7F0B-00062EC9733FCCFC-0-0] [lt=35][errcode=-4388] Unexpected internal error happen, please checkout the internal errcode(errcode=-4009, file="ob_tx_data_functor.cpp", line_no=391, info="unexpected io error")
[2026-02-20 12:51:51.344728] ERROR issue_dba_error (ob_log.cpp:1875) [46012][T1002_L0_G0][T1002][YB420A6A7F0F-00062EA73BFDB409-0-0] [lt=37][errcode=-4388] Unexpected internal error happen, please checkout the internal errcode(errcode=-4009, file="ob_tx_data_functor.cpp", line_no=391, info="unexpected io error")
[2026-02-20 12:51:51.397469] ERROR issue_dba_error (ob_log.cpp:1875) [45589][T1001_L0_G0][T1001][YB420A6A7F0F-00062EA74F0DD6ED-0-0] [lt=47][errcode=-4388] Unexpected internal error happen, please checkout the internal errcode(errcode=-4009, file="ob_tx_data_functor.cpp", line_no=391, info="unexpected io error")
[2026-02-20 12:51:51.476325] ERROR detect_palf_hang_failure_ (ob_failure_detector.cpp:356) [46100][T1003_Occam][T1003][Y0-0000000000000000-0-0] [lt=9][errcode=-4392] disk is hung(msg="clog disk may be hung, add failure event", clog_disk_hang_event={type:PROCESS HANG, module:LOG, info:clog disk hang, sen: 0, level:FATAL})
[2026-02-20 12:51:51.565773] ERROR issue_dba_error (ob_log.cpp:1875) [45580][T1001_L5_G0][T1001][YB420A6A7F0B-00062EC6BBDFFF97-0-0] [lt=36][errcode=-4388] Unexpected internal error happen, please checkout the internal errcode(errcode=-4009, file="ob_tx_data_functor.cpp", line_no=391, info="unexpected io error")
[2026-02-20 12:51:51.585428] ERROR detect_palf_hang_failure_ (ob_failure_detector.cpp:356) [45007][T1_Occam][T1][Y0-0000000000000000-0-0] [lt=9][errcode=-4392] disk is hung(msg="clog disk may be hung, add failure event", clog_disk_hang_event={type:PROCESS HANG, module:LOG, info:clog disk hang, sen: 0, level:FATAL})
[2026-02-20 12:51:51.704368] ERROR detect_palf_hang_failure_ (ob_failure_detector.cpp:356) [46351][T1004_Occam][T1004][Y0-0000000000000000-0-0] [lt=10][errcode=-4392] disk is hung(msg="clog disk may be hung, add failure event", clog_disk_hang_event={type:PROCESS HANG, module:LOG, info:clog disk hang, sen: 0, level:FATAL})
[2026-02-20 12:51:51.757989] ERROR issue_dba_error (ob_log.cpp:1875) [45961][T1002_L5_G0][T1002][YB420A6A7F0B-00062EC9733FCCFD-0-0] [lt=33][errcode=-4388] Unexpected internal error happen, please checkout the internal errcode(errcode=-4009, file="ob_tx_data_functor.cpp", line_no=391, info="unexpected io error")
[2026-02-20 12:51:51.947054] ERROR issue_dba_error (ob_log.cpp:1875) [46058][T1002_L0_G0][T1002][YB420A6A7F0F-00062EA74F0DD6EE-0-0] [lt=37][errcode=-4388] Unexpected internal error happen, please checkout the internal errcode(errcode=-4009, file="ob_tx_data_functor.cpp", line_no=391, info="unexpected io error")