次のスクリプトを使用して川をセットアップしました。
curl -XPUT 'localhost:9200/_river/foo/_meta' -d '{
"type" : "jdbc",
"jdbc" : {
"url" : "jdbc:mysql://...:3306/....",
"user" : "...",
"password" : "...",
"sql" : "SELECT v.id as _id,v.name,v.entrydate, v.link, v.html,v.created AS _created,vc.name AS company, vp.name AS position FROM foo v LEFT JOIN foocompany vc ON vc.id=v.company LEFT JOIN fooposition vp ON vp.id=v.position ",
"fetchsize" : 100,
"bulk_size" : 100,
"max_bulk_requests" : 2,
"bulk_flush_interval" : "30s",
"strategy": "simple",
"poll": "30s",
"autocommit": true
}
}'
このリバーが実行されると、MySQL サーバー自体の構成が原因であると思われる例外が発生します。
[2014-11-27 16:54:02,301][ERROR][org.xbib.elasticsearch.river.jdbc.strategy.simple.SimpleRiverFlow] com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 10 milliseconds ago. The last packet sent successfully to the server was 52,296 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
java.io.IOException: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 10 milliseconds ago. The last packet sent successfully to the server was 52,296 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
at org.xbib.elasticsearch.river.jdbc.strategy.simple.SimpleRiverSource.fetch(SimpleRiverSource.java:231)
at org.xbib.elasticsearch.river.jdbc.strategy.simple.SimpleRiverFlow.move(SimpleRiverFlow.java:129)
at org.xbib.elasticsearch.river.jdbc.strategy.simple.SimpleRiverFlow.run(SimpleRiverFlow.java:88)
at java.lang.Thread.run(Thread.java:745)
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 10 milliseconds ago. The last packet sent successfully to the server was 52,296 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1129)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3720)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3609)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4160)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:928)
at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:2053)
at com.mysql.jdbc.RowDataDynamic.nextRecord(RowDataDynamic.java:406)
at com.mysql.jdbc.RowDataDynamic.next(RowDataDynamic.java:385)
at com.mysql.jdbc.RowDataDynamic.close(RowDataDynamic.java:163)
at com.mysql.jdbc.ResultSetImpl.realClose(ResultSetImpl.java:7472)
at com.mysql.jdbc.ResultSetImpl.close(ResultSetImpl.java:919)
at org.xbib.elasticsearch.river.jdbc.strategy.simple.SimpleRiverSource.close(SimpleRiverSource.java:613)
at org.xbib.elasticsearch.river.jdbc.strategy.simple.SimpleRiverSource.execute(SimpleRiverSource.java:263)
at org.xbib.elasticsearch.river.jdbc.strategy.simple.SimpleRiverSource.fetch(SimpleRiverSource.java:227)
... 3 more
Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:3166)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3620)
... 15 more
ここでの問題は、セットアップで MySQL を再構成するオプションがないことです。残念ながら、他の選択肢を探す必要があります。
- ElasticSearch がしばらくしてから接続を再確立し、インデックス作成を再開することは可能ですか?
- おそらくJDBC Riverを使用せずに、ElasticSearchとMySQLをブリッジする他の方法はありますか?