/** {@inheritDoc} */
@Override
public Plan getPlan(String... args) {
// parse job parameters
int noSubTasks = (args.length > 0 ? Integer.parseInt(args[0]) : 1);
String docsInput = (args.length > 1 ? args[1] : "");
String ranksInput = (args.length > 2 ? args[2] : "");
String visitsInput = (args.length > 3 ? args[3] : "");
String output = (args.length > 4 ? args[4] : "");
/*
* Output Format:
* 0: URL
* 1: DOCUMENT_TEXT
*/
// Create DataSourceContract for documents relation
FileDataSource docs = new FileDataSource(RecordInputFormat.class, docsInput, "Docs Input");
docs.setDegreeOfParallelism(noSubTasks);
docs.getCompilerHints().setUniqueField(new FieldSet(0));
RecordInputFormat.configureRecordFormat(docs)
.recordDelimiter('\n')
.fieldDelimiter('|')
.field(VarLengthStringParser.class, 0)
.field(VarLengthStringParser.class, 1);
/*
* Output Format:
* 0: URL
* 1: RANK
* 2: AVG_DURATION
*/
// Create DataSourceContract for ranks relation
FileDataSource ranks = new FileDataSource(RecordInputFormat.class, ranksInput, "Ranks input");
ranks.setDegreeOfParallelism(noSubTasks);
RecordInputFormat.configureRecordFormat(ranks)
.recordDelimiter('\n')
.fieldDelimiter('|')
.field(VarLengthStringParser.class, 1)
.field(DecimalTextIntParser.class, 0)
.field(DecimalTextIntParser.class, 2);
/*
* Output Format:
* 0: URL
* 1: DATE
*/
// Create DataSourceContract for visits relation
FileDataSource visits =
new FileDataSource(RecordInputFormat.class, visitsInput, "Visits input:q");
visits.setDegreeOfParallelism(noSubTasks);
RecordInputFormat.configureRecordFormat(visits)
.recordDelimiter('\n')
.fieldDelimiter('|')
.field(VarLengthStringParser.class, 1)
.field(VarLengthStringParser.class, 2);
// Create MapContract for filtering the entries from the documents
// relation
MapContract filterDocs =
MapContract.builder(FilterDocs.class).input(docs).name("Filter Docs").build();
filterDocs.setDegreeOfParallelism(noSubTasks);
filterDocs.getCompilerHints().setAvgRecordsEmittedPerStubCall(0.15f);
filterDocs.getCompilerHints().setAvgBytesPerRecord(60);
filterDocs.getCompilerHints().setAvgNumRecordsPerDistinctFields(new FieldSet(new int[] {0}), 1);
// Create MapContract for filtering the entries from the ranks relation
MapContract filterRanks =
MapContract.builder(FilterRanks.class).input(ranks).name("Filter Ranks").build();
filterRanks.setDegreeOfParallelism(noSubTasks);
filterRanks.getCompilerHints().setAvgRecordsEmittedPerStubCall(0.25f);
filterRanks
.getCompilerHints()
.setAvgNumRecordsPerDistinctFields(new FieldSet(new int[] {0}), 1);
// Create MapContract for filtering the entries from the visits relation
MapContract filterVisits =
MapContract.builder(FilterVisits.class).input(visits).name("Filter Visits").build();
filterVisits.setDegreeOfParallelism(noSubTasks);
filterVisits.getCompilerHints().setAvgBytesPerRecord(60);
filterVisits.getCompilerHints().setAvgRecordsEmittedPerStubCall(0.2f);
// Create MatchContract to join the filtered documents and ranks
// relation
MatchContract joinDocsRanks =
MatchContract.builder(JoinDocRanks.class, PactString.class, 0, 0)
.input1(filterDocs)
.input2(filterRanks)
.name("Join Docs Ranks")
.build();
joinDocsRanks.setDegreeOfParallelism(noSubTasks);
// Create CoGroupContract to realize a anti join between the joined
// documents and ranks relation and the filtered visits relation
CoGroupContract antiJoinVisits =
CoGroupContract.builder(AntiJoinVisits.class, PactString.class, 0, 0)
.input1(joinDocsRanks)
.input2(filterVisits)
.name("Antijoin DocsVisits")
.build();
antiJoinVisits.setDegreeOfParallelism(noSubTasks);
antiJoinVisits.getCompilerHints().setAvgRecordsEmittedPerStubCall(0.8f);
// Create DataSinkContract for writing the result of the OLAP query
FileDataSink result =
new FileDataSink(RecordOutputFormat.class, output, antiJoinVisits, "Result");
result.setDegreeOfParallelism(noSubTasks);
RecordOutputFormat.configureRecordFormat(result)
.recordDelimiter('\n')
.fieldDelimiter('|')
.lenient(true)
.field(PactInteger.class, 1)
.field(PactString.class, 0)
.field(PactInteger.class, 2);
// Return the PACT plan
return new Plan(result, "Weblog Analysis");
}
/**
* Creates a configuration builder that can be used to set the input format's parameters to the
* config in a fluent fashion.
*
* @return A config builder for setting parameters.
*/
public static ConfigBuilder configureRecordFormat(FileDataSink target) {
return new ConfigBuilder(target.getParameters());
}
