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¥ããŸãã ãã£ãã·ãã£ã¯èªåçã«ã¹ã±ãŒã«ããã¯ããŠã³ ETL ããã¹ãŠã®ã¬ã³ãŒãã®æžã蟌ã¿ãçµãããšãUpdateTable ãå床åŒã³åºããŠããããžã§ã³ããã£ãã·ãã£æžã蟌ã¿ã¬ãã«ãäžããåŸç¶ã¿ã¹ã¯ãã¹ã±ãžã¥ãŒã«ããŸãã def run_etl(table_name, records_count, target_duration_hours=1): # ã¹ããã 3 -- ãã£ãã·ãã£ããžã£ã¹ãã€ã³ã¿ã€ã ã§èšç®ããŠã¹ã±ãŒã«ã¢ãã desired_wcu = ceil(records_count / (target_duration_hours * 3600)) desired_wcu = clamp(desired_wcu, MIN_WCU, MAX_WCU) wait_until_table_is_active(table_name) current_wcu = describe_table(table_name).provisioned_write_capacity update_table(table_name, wcu=current_wcu + desired_wcu) # UpdateTable API wait_until_table_is_active(table_name) try: # ã¹ããã 4 -- Spark DynamoDB Connector ãä»ããŠããŒã¿ã䞊åã«æžã蟌㿠spark.write(target_table=table_name, write_throughput_ratio=1.1) # ããããžã§ã³ã WCU ã®çŽ 110% finally: # ã¹ããã 5 -- ãã£ãã·ãã£ãèªåçã«ã¹ã±ãŒã«ããã¯ããŠã³ update_table(table_name, wcu=current_wcu) # UpdateTable API wait_until_table_is_active(table_name) DynamoDB ããŒãã«ã®ããããžã§ã³ããã£ãã·ãã£ãèšç®ããŠã¹ã±ãŒã«ã¢ãããã Python ç䌌ã³ãŒã Amazon Simple Storage Service (Amazon S3) ããã® Import Table ã䜿çšãã DynamoDB ãžã®æžã蟌ã¿ã®æéãšã³ã¹ããããã«åæžãããããHBase ããã®ç§»è¡æããã³äžéšã®å®æçãªæžã蟌ã¿ã«ã DynamoDB Import from S3 æ©èœã䜿çšããŠãAmazon Simple Storage Service (Amazon S3) ããçŽæ¥ããŒã¿ãã€ã³ããŒãããŸãããããã«ãããã¬ã³ãŒãããšã®æžã蟌ã¿ãäžèŠã«ãªããåãèŸŒã¿æã«æžã蟌ã¿ãã£ãã·ãã£ãŠããããæ¶è²»ããããšããªããªããŸãã ã¡ãªãã ãã«ã¯åã蟌ã¿ã§ æå€§ 90% ã®ã³ã¹ãåæž ã ETL åã蟌ã¿ã®ããã® Databricks ã³ã³ãã¥ãŒãã£ã³ã°äœ¿çšãäžèŠ ã ãã€ãã£ãã€ã³ããŒãã«ãã£ãŠãªãã©ã€ããžãã¯ãé èœãããéçšãªãŒããŒããããåãé€ããã ç°¡çŽ åãããéçš ã åŸæ¥ã® Spark ãžã§ããšæ¯èŒã㊠ããé«éãªåã蟌㿠ã Import Table æ©èœã¯ãã¢ã€ãã ããšã®æžãèŸŒã¿æäœã§ã¯ãªããåã蟌ãŸããããŒã¿ã®ç·éã«åºã¥ããŠèª²éããããããç¹ã«ç§ãã¡ã®ã±ãŒã¹ã®ããã«å°ããªã¢ã€ãã ãæã€å€§ããªããŒãã«ãç§»è¡ããå Žåã倧å¹
ãªã³ã¹ãåæžãå®çŸããŸãã S3 ããã®ã€ã³ããŒãã¯ãŒã¯ãã㌠ETL åã®èªååã®äžç°ãšããŠãããŒã¿ã¯æå®ããã S3 ãã¹ããèªã¿åãããImport from S3 æ©èœã§ãµããŒããããŠãã DYNAMODB_JSON 圢åŒã«å€æãããŸãã æŽåœ¢ãããããŒã¿ã® S3 ãã¹ãšããŒãã«å®çŸ©ãæå®ã㊠ImportTable API ãåŒã³åºããŸãã ã¢ãã¿ãªã³ã°ã¿ã¹ã¯ãã€ã³ããŒãå®äºãŸã§é²æã远跡ããŸãã æéããšã«å¥ã
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