| 123456789101112131415 |
- {
- "type": "SQLOperator",
- "node_name": "HDFS_SCAN_NODE",
- "metric_names": [
- "RowsRead",
- "ScannerThreadsUserTime",
- "ScannerThreadsSysTime",
- "AverageScannerThreadConcurrency"
- ],
- "rule": {
- "expr": "(vars['ScannerThreadsUserTime'] + vars['ScannerThreadsSysTime'] - vars['RowsRead'] * 100) / max(1,vars['AverageScannerThreadConcurrency'])",
- "message": "Predicates might be expensive (expectes speed 10m rows per sec per core)",
- "label": "Slow HDFS Scan"
- }
- }
|