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我正在編寫phoenix-4.7.0
HBase-0.98
並嘗試編寫java源代碼以決定是否可以將phoenix用作SQL-SKIN。Phoenix JDBC連接時間太長
我將phoenix-4.7.0-HBase-0.98-client.jar
設置爲$ CLASSPATH,它工作正常,但需要幾秒鐘才能完成建立新連接。
phoenixTest.java
import java.sql.*;
import java.util.*;
public class phoenixTest {
public static void main(String args[]) throws Exception {
Connection conn;
Properties prop = new Properties();
Class.forName("org.apache.phoenix.jdbc.PhoenixDriver");
long startTime = System.currentTimeMillis();
conn = DriverManager.getConnection("jdbc:phoenix:localhost:2181:/hbase");
long estimatedTime = System.currentTimeMillis() - startTime;
System.out.format("got connection : %s ms\n", Long.toString(estimatedTime));
}
}
結果
log4j:WARN No appenders could be found for logger(org.apache.hadoop.conf.Configuration.deprecation).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
got connection : 3218 ms
這是正常的嗎?
如果不是,有沒有辦法讓它更快?