このすぐに使用できる PredictionIO Amazon EC2 インスタンスを開始した後、このクイック スタートに従っています。これらのコマンドを実行すると、次のように失敗します。pio train
pio app new MyTextApp
pio import --appid 1 --input data/stopwords.json
pio import --appid 1 --input data/emails.json
pio build
pio train
...
Data set is empty, make sure event fields match imported data.
Exception in thread "main" java.lang.IllegalStateException: Haven't seen any document yet.
at org.apache.spark.mllib.feature.IDF$DocumentFrequencyAggregator.idf(IDF.scala:132)
at org.apache.spark.mllib.feature.IDF.fit(IDF.scala:56)
at uk.co.news.PreparedData.<init>(Preparator.scala:70)
at uk.co.news.Preparator.prepare(Preparator.scala:47)
at uk.co.news.Preparator.prepare(Preparator.scala:43)
メールをインポートするコマンドを実行してもエラーが発生しないため、データ セットがまだ空である理由がわかりません。ファイルを再確認したところemail.json
、データは確かにそこにあり、これは実行時の結果です
pio import --appid 1 --input data/emails.json
ubuntu@ip-172-31-0-60:~/pio-textclassification$ pio import --appid 1 --input data/emails.json
[INFO] [Runner$] Submission command: /opt/spark-1.4.1-bin-hadoop2.6/bin/spark-submit --class io.prediction.tools.imprt.FileToEvents --files file:/opt/PredictionIO/conf/log4j.properties --driver-class-path /opt/PredictionIO/conf file:/opt/PredictionIO/lib/pio-assembly-0.9.4.jar --appid 1 --input file:/home/ubuntu/pio-textclassification/data/emails.json --env PIO_ENV_LOADED=1,PIO_STORAGE_REPOSITORIES_METADATA_NAME=pio_meta,PIO_FS_BASEDIR=/home/ubuntu/.pio_store,PIO_HOME=/opt/PredictionIO,PIO_FS_ENGINESDIR=/home/ubuntu/.pio_store/engines,PIO_STORAGE_SOURCES_PGSQL_URL=jdbc:postgresql://localhost/pio,PIO_STORAGE_REPOSITORIES_METADATA_SOURCE=PGSQL,PIO_STORAGE_REPOSITORIES_MODELDATA_SOURCE=PGSQL,PIO_STORAGE_REPOSITORIES_EVENTDATA_NAME=pio_event,PIO_STORAGE_SOURCES_PGSQL_PASSWORD=pio,PIO_STORAGE_SOURCES_PGSQL_TYPE=jdbc,PIO_FS_TMPDIR=/home/ubuntu/.pio_store/tmp,PIO_STORAGE_SOURCES_PGSQL_USERNAME=pio,PIO_STORAGE_REPOSITORIES_MODELDATA_NAME=pio_model,PIO_STORAGE_REPOSITORIES_EVENTDATA_SOURCE=PGSQL,PIO_CONF_DIR=/opt/PredictionIO/conf
[INFO] [Remoting] Starting remoting
[INFO] [Remoting] Remoting started; listening on addresses :[akka.tcp://sparkDriver@172.31.0.60:49257]
[INFO] [FileToEvents$] Events are imported.
[INFO] [FileToEvents$] Done.
編集:
pio build --verbose
飲み込まれていた例外を示しました。問題はデータベース接続にありますが、例外の一部が「...」に置き換えられているため、何が問題なのかはまだ明確ではありません。
[DEBUG] [ConnectionPool$] Registered connection pool : ConnectionPool(url:jdbc:postgresql://localhost/pio, user:pio) using factory : <default>
[DEBUG] [ConnectionPool$] Registered singleton connection pool : ConnectionPool(url:jdbc:postgresql://localhost/pio, user:pio)
[DEBUG] [StatementExecutor$$anon$1] SQL execution completed
[SQL Execution]
create table if not exists pio_meta_enginemanifests ( id varchar(100) not null primary key, version text not null, engineName text not null, description text, files text not null, engineFactory text not null); (10 ms)
[Stack Trace]
...
io.prediction.data.storage.jdbc.JDBCEngineManifests$$anonfun$1.apply(JDBCEngineManifests.scala:37)
io.prediction.data.storage.jdbc.JDBCEngineManifests$$anonfun$1.apply(JDBCEngineManifests.scala:29)
scalikejdbc.DBConnection$class.autoCommit(DBConnection.scala:222)
scalikejdbc.DB.autoCommit(DB.scala:60)
scalikejdbc.DB$$anonfun$autoCommit$1.apply(DB.scala:215)
scalikejdbc.DB$$anonfun$autoCommit$1.apply(DB.scala:214)
scalikejdbc.LoanPattern$class.using(LoanPattern.scala:18)
scalikejdbc.DB$.using(DB.scala:138)
scalikejdbc.DB$.autoCommit(DB.scala:214)
io.prediction.data.storage.jdbc.JDBCEngineManifests.<init>(JDBCEngineManifests.scala:29)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:526)
io.prediction.data.storage.Storage$.getDataObject(Storage.scala:293)
...
[INFO] [RegisterEngine$] Registering engine JmhjlGoEjJuKXhXpY70MbEkuGHMuOZzL 8ccd38126d56ed48adaa9f85547131467f7629f7
[DEBUG] [StatementExecutor$$anon$1] SQL execution completed
[SQL Execution]
update pio_meta_enginemanifests set engineName = 'pio-textclassification', description = 'pio-autogen-manifest', files = 'file:/home/ubuntu/pio-textclassification/target/scala-2.10/uk.co.news-assembly-0.1-SNAPSHOT-deps.jar... (192)', engineFactory = '' where id = 'JmhjlGoEjJuKXhXpY70MbEkuGHMuOZzL' and version = '8ccd38126d56ed48adaa9f85547131467f7629f7'; (3 ms)
[Stack Trace]
...
io.prediction.data.storage.jdbc.JDBCEngineManifests$$anonfun$7.apply(JDBCEngineManifests.scala:85)
io.prediction.data.storage.jdbc.JDBCEngineManifests$$anonfun$7.apply(JDBCEngineManifests.scala:78)
scalikejdbc.DBConnection$$anonfun$3.apply(DBConnection.scala:297)
scalikejdbc.DBConnection$class.scalikejdbc$DBConnection$$rollbackIfThrowable(DBConnection.scala:274)
scalikejdbc.DBConnection$class.localTx(DBConnection.scala:295)
scalikejdbc.DB.localTx(DB.scala:60)
scalikejdbc.DB$.localTx(DB.scala:257)
io.prediction.data.storage.jdbc.JDBCEngineManifests.update(JDBCEngineManifests.scala:78)
io.prediction.tools.RegisterEngine$.registerEngine(RegisterEngine.scala:50)
io.prediction.tools.console.Console$.build(Console.scala:813)
io.prediction.tools.console.Console$$anonfun$main$1.apply(Console.scala:698)
io.prediction.tools.console.Console$$anonfun$main$1.apply(Console.scala:684)
scala.Option.map(Option.scala:145)
io.prediction.tools.console.Console$.main(Console.scala:684)
io.prediction.tools.console.Console.main(Console.scala)
...
[DEBUG] [StatementExecutor$$anon$1] SQL execution completed
[SQL Execution]
INSERT INTO pio_meta_enginemanifests VALUES( 'JmhjlGoEjJuKXhXpY70MbEkuGHMuOZzL', '8ccd38126d56ed48adaa9f85547131467f7629f7', 'pio-textclassification', 'pio-autogen-manifest', 'file:/home/ubuntu/pio-textclassification/target/scala-2.10/uk.co.news-assembly-0.1-SNAPSHOT-deps.jar... (192)', ''); (1 ms)
[Stack Trace]
...
io.prediction.data.storage.jdbc.JDBCEngineManifests$$anonfun$2.apply(JDBCEngineManifests.scala:48)
io.prediction.data.storage.jdbc.JDBCEngineManifests$$anonfun$2.apply(JDBCEngineManifests.scala:40)
scalikejdbc.DBConnection$$anonfun$3.apply(DBConnection.scala:297)
scalikejdbc.DBConnection$class.scalikejdbc$DBConnection$$rollbackIfThrowable(DBConnection.scala:274)
scalikejdbc.DBConnection$class.localTx(DBConnection.scala:295)
scalikejdbc.DB.localTx(DB.scala:60)
scalikejdbc.DB$.localTx(DB.scala:257)
io.prediction.data.storage.jdbc.JDBCEngineManifests.insert(JDBCEngineManifests.scala:40)
io.prediction.data.storage.jdbc.JDBCEngineManifests.update(JDBCEngineManifests.scala:89)
io.prediction.tools.RegisterEngine$.registerEngine(RegisterEngine.scala:50)
io.prediction.tools.console.Console$.build(Console.scala:813)
io.prediction.tools.console.Console$$anonfun$main$1.apply(Console.scala:698)
io.prediction.tools.console.Console$$anonfun$main$1.apply(Console.scala:684)
scala.Option.map(Option.scala:145)
io.prediction.tools.console.Console$.main(Console.scala:684)
...
[INFO] [Console$] Your engine is ready for training.