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TEZ-8 UI presented at the 49th meetup of the Bay Area Hadoop User Group.
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TEZ-8 UI Walkthrough
1.
Page1 © Hortonworks
Inc. 2014 Tez: UI & Debugging Fall 2014 Version 1.0 gopalv@apache.org
2.
Page2 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 TEZ (nomenclature) • DAG • Vertex • Task • Attempt • Container • Edge
3.
Page3 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Directed Acyclic Graphs
4.
Page4 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 How to view raw DAGs from logs • Tez Application logs contain .dot files in Graphviz format • To generate images: dot –Tpng –o dag.png dag.dot • OR javascript version: http://people.apache.org/~gopalv/dagviz/
5.
Page5 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 TEZ-8 JIRA & branch • TEZ UI for progress tracking and history • https://issues.apache.org/jira/browse/TEZ-8 • https://github.com/apache/tez/tree/TEZ-8 • UI-centric branch
6.
Page6 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez-UI: Landing page
7.
Page7 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez UI: DAG view
8.
Page8 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez UI: Vertex view
9.
Page9 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez UI: Vertex -> Tasks view
10.
Page10 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez UI: Task logs Task logs
11.
Page11 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez UI: Task counters Task counters
12.
Page12 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez UI: Task counters Search for counters
13.
Page13 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez UI: Per-edge shuffle counters Map 3 to Map 1 only
14.
Page14 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez UI: Payload view
15.
Page15 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez UI: Failed DAGs (diagnostic)
16.
Page16 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez UI: Failed tasks indication Failed tasks
17.
Page17 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez UI: Failed tasks
18.
Page18 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Tez UI: Failed attempts
19.
Page20 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Post-hoc/Ad-hoc analysis helpers • tez/tez-tools ships with two helper tools • swimlanes • tez-tfile-parser
20.
Page21 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Swimlanes • ./yarn-swimlanes.sh application_1415860665053_0098
21.
Page22 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 TFile parser • Tez logs can be parsed via PIG • Allows us to treat our logs exactly like we treat our big-data • Processing using “pig –x tez” + UDFs [1] rawLogs = load ‘/app-logs/root/logs/application_1409012059361_0539/*' using org.apache.tez.tools.TFileLoader() as (machine:chararray, key:chararray, line:chararray); [1] - https://github.com/rajeshbalamohan/tez_log_parser/blob/master/src/main/resources/pig/udf.groovy
22.
Page23 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 TFile parser (contd) • Parsing INFO logs for shuffle for instance (for time taken + machine) Problematic machine
23.
Page24 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 TFile parser (node/rack traffic at 350 nodes) Problematic machine Fetcher in node-100 is always slow (irrespective of where its pulling data from) Other faulty nodes Mapout served from node-100 to node-120 To any node is always slow
24.
Page25 © Hortonworks
Inc. 2014 FOR: BAY AREA HADOOP USER GROUP MEETUP #49 Questions? • Thanks all tez contributors for their efforts! • FYI, Hadoop Summit 2015 (Europe) Call for papers is out
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