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LLAP Nov Meetup
1.
Page1 © Hortonworks
Inc. 2011 – 2014. All Rights Reserved Bay Area Hive Contributor Meetup 16-Nov-2015 LLAP: Live Long and Process!
2.
Page2 © Hortonworks
Inc. 2011 – 2014. All Rights Reserved Sub-Second Hive with LLAP Sub Second: • LLAP: Persistent server to instantly execute SQL queries. • Caches hottest data in RAM. • Overcomes latencies associated with Hive on Tez or Hive on Spark. SQL Compatibility: • 100% Compatible with SQL. • Compatible with existing tools (BI, ETL, etc.) Security: • Security via HiveServer2. • Integrates with Apache Ranger. Hadoop Node Hadoop Node Hadoop Node Vector Cache LLAP Server Vector Cache LLAP Server Vector Cache LLAP Server Hive Sever2 LLAP Servers (1 Per Hadoop Node) Hive SQL
3.
Page3 © Hortonworks
Inc. 2011 – 2014. All Rights Reserved LLAP Failure Tolerance Concurrency & Pre-emption ACID Transactions No MPP Hotspots Data overflow to disk Elastic scale up/down YARN native application Hadoop Node Hadoop Node Hadoop Node Vector Cache LLAP Server Vector Cache LLAP Server Vector Cache LLAP Server Hive Sever2 LLAP Servers (1 Per Hadoop Node) Hive SQL
4.
Page4 © Hortonworks
Inc. 2011 – 2014. All Rights Reserved TPC-DS Query55 -- monthly sales by brand manager select i_brand_id brand_id, i_brand brand, sum(ss_ext_sales_price) ext_price from date_dim, store_sales, item where date_dim.d_date_sk = store_sales.ss_sold_date_sk and store_sales.ss_item_sk = item.i_item_sk and i_manager_id=${RANDOM_MANAGER} and d_moy=${RANDOM_MONTH} and d_year=${RANDOM_YEAR} group by i_brand, i_brand_id order by ext_price desc, i_brand_id limit 100 ;
5.
Page5 © Hortonworks
Inc. 2011 – 2014. All Rights Reserved LLAP demo!
6.
Page6 © Hortonworks
Inc. 2011 – 2014. All Rights Reserved
7.
Page7 © Hortonworks
Inc. 2011 – 2014. All Rights Reserved 0 1 2 3 4 5 6 7 1 2 4 8 QueryLatency(ms) Thousands Concurrency TPC-DS Q55 @ 10Tb scale (LLAP) x 256 runs 25th Percentile 50th Percentile 75th Percentile 100th Percentile
8.
Page8 © Hortonworks
Inc. 2011 – 2014. All Rights Reserved LLAP Execution 610 LLAP Execution 900 Compile 762 Compile 1054 25 million rows 32 million rows 0 5 10 15 20 25 30 35 0 500 1000 1500 2000 2500 3000 3500 Median 95th Percentile RowsScanned Millions Millseconds TPC-DS Q55 (@200Gb) - 1000 runs LLAP Execution Compile DAG Build Tez Client Tez AM Rows Scanned
9.
Page9 © Hortonworks
Inc. 2011 – 2014. All Rights Reserved LLAP Execution Compile 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 1 501 1001 TPC-DS Q55 (@200Gb) - Latency Fractions across 1000 runs LLAP Execution DAG Build Tez Client Tez AM Compile
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