Apache Drillを使用してspring-boot mavenプロジェクトを1つ作成しました。ファイルからデータを正常に照会できました。私がPCFにプロジェクトをデプロイしようとしたときに、インスタンスが複数のslf4jバインディングを記述してクラッシュするたびに発生しました。Pivotal Cloud FlowのApache Drillデプロイ
@SpringBootApplication
public class Drill {
static final String JDBC_DRIVER = "org.apache.drill.jdbc.Driver";
public static final String DRILL_JDBC_LOCAL_URI = "jdbc:drill:drillbit=xx.xx.xxx.xx;
public static void main(String[] args) throws IOException {
SpringApplication.run(Drill.class, args);
boolean result = false;
try {
result = sqlResult();
} catch (FileNotFoundException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(result);
}
public static boolean sqlResult() throws IOException {
try {
Class.forName(JDBC_DRIVER);
} catch (ClassNotFoundException ce) {
ce.printStackTrace();
}
long d = 1;
try {
Connection conn = DriverManager.getConnection(DRILL_JDBC_LOCAL_URI, "usrname","passwrd");
Statement stmt = conn.createStatement();
String sql = "select * from dfs.`/Users/system.user/Desktop/123.csv`";
ResultSet rs = stmt.executeQuery(sql);
long currentTimeMillis = System.currentTimeMillis();
while (rs.next()) {
System.out.println("columns: "+rs.getString(1));
d++;
}
long currentTimeMillisEnd = System.currentTimeMillis();
System.out.println(" start: "+currentTimeMillis+" end "+currentTimeMillisEnd +" size: "+d);
rs.close();
} catch (Exception se) {
System.out.println("last count is: "+d);
se.printStackTrace();
}
return false;
}
}
pom.xml:<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.6.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<org.slf4j-version>1.7.5</org.slf4j-version>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
<exclusion>
<artifactId>jcl-over-slf4j</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
<exclusion>
<artifactId>jul-to-slf4j</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
</exclusions>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.drill.exec</groupId>
<artifactId>drill-jdbc-all</artifactId>
<version>1.1.0</version>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
<exclusion>
<artifactId>jcl-over-slf4j</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
<exclusion>
<artifactId>jul-to-slf4j</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-core</artifactId>
<version>0.20.2</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
これは私が取得エラーメッセージです：
[ERR] SLF4J: Class path contains multiple SLF4J bindings.
[ERR] SLF4J: Found binding in [jar:file:/home/vcap/app/BOOT-INF/lib/drill-jdbc-all-1.1.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
[ERR] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
[ERR] SLF4J: Found binding in [jar:file:/home/vcap/app/BOOT-INF/lib/logback-classic-1.1.11.jar!/org/slf4j/impl/StaticLoggerBinder.class]
[ERR] SLF4J: Actual binding is of type [ch.qos.logback.classic.util.ContextSelectorStaticBinder]
[ERR] Exception in thread "main" java.lang.reflect.InvocationTargetException
[ERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ERR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[ERR] at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
[ERR] at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
[ERR] at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
[ERR] Caused by: java.lang.NoSuchMethodError: com.fasterxml.jackson.databind.ObjectMapper.readValue(Ljava/lang/String;Lcom/fasterxml/jackson/core/type/TypeReference;)Ljava/lang/Object;
[ERR] at org.springframework.boot.SpringApplication.run(SpringApplication.java:296)
[ERR] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)
[ERR] at pack.drill.Drill.main(Drill.java:26)
私はネット上で利用できるすべての可能なヘルプを試してみましたが、私は問題を把握することはできませんよ。私はなぜそれがローカル環境で完璧に動作しているのか、それがなぜPCF上に配備されていないのか理解していません。