Critical bug: current_group and current_key were inside the while loop, causing them to be reset on each batch iteration. When an incomplete group spanned a batch boundary, it would be: 1. Buffered at end of batch N (in local current_group) 2. LOST when loop continued (new local variables created) 3. Re-fetched and yielded again in batch N+1 This caused the same consolidated record to be inserted many times. Solution: Move current_group and current_key OUTSIDE while loop to persist across batch iterations. Incomplete groups now properly merge across batch boundaries without duplication. Algorithm: - Only yield groups when we're 100% certain they're complete - A group is complete when the next key differs from current key - At batch boundaries, incomplete groups stay buffered for next batch - Resume always uses last_completed_key to avoid re-processing This fixes the user's observation of 27 identical rows for the same consolidated record. 🤖 Generated with Claude Code Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
64 lines
2.0 KiB
Python
64 lines
2.0 KiB
Python
#!/usr/bin/env python3
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"""Debug what the generator is actually returning."""
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import sys
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sys.path.insert(0, '/home/alex/devel/mysql2postgres')
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from src.connectors.mysql_connector import MySQLConnector
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from src.utils.logger import setup_logger, get_logger
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setup_logger(__name__)
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logger = get_logger(__name__)
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print("\n" + "="*80)
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print("Testing consolidation groups generator for d1")
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print("="*80 + "\n")
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with MySQLConnector() as mysql_conn:
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partition = "d1"
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group_num = 0
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# Use datetime objects to match what the generator uses
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import datetime
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target_key = ("ID0003", "DT0002", datetime.date(2014, 8, 31), datetime.timedelta(hours=11, minutes=59, seconds=10))
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print("First 20 groups from generator:\n")
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print("DEBUG: First row columns:", flush=True)
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for group_rows in mysql_conn.fetch_consolidation_groups_from_partition(
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"ELABDATADISP",
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partition,
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limit=100
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):
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group_num += 1
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if group_rows:
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first_row = group_rows[0]
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# Debug: print all columns from first group
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if group_num == 1:
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print(f" Available columns: {first_row.keys()}\n")
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print(f" First row data: {dict(first_row)}\n")
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key = (
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first_row.get("UnitName"),
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first_row.get("ToolNameID"),
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str(first_row.get("EventDate")),
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str(first_row.get("EventTime"))
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)
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nodes = sorted([r.get('NodeNum') for r in group_rows])
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# Show first 20 groups or target key
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if group_num <= 20 or key == target_key:
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print(f"Group {group_num}: key={key}")
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print(f" Nodes ({len(nodes)}): {nodes}")
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print(f" Rows count: {len(group_rows)}\n")
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if key == target_key:
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print("^^^ THIS IS THE TARGET KEY! ^^^\n")
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break
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if group_num >= 100:
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print(f"\nStopped at group {group_num}")
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break
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print(f"\nTotal groups processed: {group_num}")
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print("Done!\n")
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