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"Errors by Type", + "Alerts", + """Alerts in the system group by type: + - Too Many Barriers: there are too many uncommitted barriers generated. This means the streaming graph is stuck or under heavy load. Check 'Barrier Latency' panel. + - Recovery Triggered: cluster recovery is triggered. Check 'Errors by Type' / 'Node Count' panels. + - Lagging Version: the checkpointed or pinned version id is lagging behind the current version id. Check 'Hummock Manager' section in dev dashboard. + - Lagging Epoch: the pinned or safe epoch is lagging behind the current max committed epoch. Check 'Hummock Manager' section in dev dashboard. + - Lagging Compaction: there are too many files in L0. This can be caused by compactor failure or lag of compactor resource. Check 'Compaction' section in dev dashboard. + - Lagging Vacuum: there are too many stale files waiting to be cleaned. This can be caused by compactor failure or lag of compactor resource. Check 'Compaction' section in dev dashboard. + """, + [ + panels.target( + f"{metric('all_barrier_nums')} >= bool 200", + "Too Many Barriers", + ), + panels.target( + f"sum(rate({metric('recovery_latency_count')}[$__rate_interval])) > bool 0 + sum({metric('recovery_failure_cnt')}) > bool 0", + "Recovery Triggered", + ), + panels.target( + f"(({metric('storage_current_version_id')} - {metric('storage_checkpoint_version_id')}) >= bool 100) + " + + f"(({metric('storage_current_version_id')} - {metric('storage_min_pinned_version_id')}) >= bool 100)", + "Lagging Version", + ), + panels.target( + f"(({metric('storage_max_committed_epoch')} - {metric('storage_min_pinned_epoch')}) >= bool 6553600000 unless + {metric('storage_min_pinned_epoch')} == 0) + " + + f"(({metric('storage_max_committed_epoch')} - {metric('storage_safe_epoch')}) >= bool 6553600000 unless + {metric('storage_safe_epoch')} == 0)", + "Lagging Epoch", + ), + panels.target( + f"sum(label_replace({metric('storage_level_sst_num')}, 'L0', 'L0', 'level_index', '.*_L0') unless " + + f"{metric('storage_level_sst_num')}) by (L0) >= bool 200", + "Lagging Compaction", + ), + panels.target( + f"{metric('storage_stale_object_count')} >= bool 200", + "Lagging Vacuum", + ), + ], + ["last"], + ), + panels.timeseries_count( + "Errors", "Errors in the system group by type", [ panels.target( @@ -66,7 +107,11 @@ def section_overview(panels): ), panels.target( f"sum({metric('user_source_error_count')}) by (error_type, error_msg, fragment_id, table_id, executor_name)", - 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