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rfoldes / Avro-Test

A simple test of Avro 1.5 capabilities including dynamic typing, untagged (compact) data storage and schema evolution.
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NPE when running this program #1

Open fishercoder1534 opened 7 years ago

fishercoder1534 commented 7 years ago

Hi Robert,

Thanks for creating this awesome project, but after copying your code, I run into NullPointerException when trying to run it. It's this line: https://github.com/rfoldes/Avro-Test/blob/master/src/avro/Employee.java#L28 that throws it. Here's the stacktrace:

/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/bin/java -Didea.launcher.port=7540 "-Didea.launcher.bin.path=/Applications/IntelliJ IDEA CE.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath "/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/jfxswt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/packager.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home/lib/tools.jar:/Users/stevesun/personal_dev/RandomJava/target/classes:/Users/stevesun/.m2/repository/org/apache/logging/log4j/log4j-api/2.7/log4j-api-2.7.jar:/Users/stevesun/.m2/repository/org/apache/logging/log4j/log4j-core/2.7/log4j-core-2.7.jar:/Users/stevesun/.m2/repository/junit/junit/4.11/junit-4.11.jar:/Users/stevesun/.m2/repository/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar:/Users/stevesun/.m2/repository/org/springframework/spring-context/4.1.6.RELEASE/spring-context-4.1.6.RELEASE.jar:/Users/stevesun/.m2/repository/org/springframework/spring-beans/4.1.6.RELEASE/spring-beans-4.1.6.RELEASE.jar:/Users/stevesun/.m2/repository/org/springframework/spring-core/4.1.6.RELEASE/spring-core-4.1.6.RELEASE.jar:/Users/stevesun/.m2/repository/commons-logging/commons-logging/1.2/commons-logging-1.2.jar:/Users/stevesun/.m2/repository/org/springframework/spring-expression/4.1.6.RELEASE/spring-expression-4.1.6.RELEASE.jar:/Users/stevesun/.m2/repository/org/springframework/spring-aop/4.1.6.RELEASE/spring-aop-4.1.6.RELEASE.jar:/Users/stevesun/.m2/repository/aopalliance/aopalliance/1.0/aopalliance-1.0.jar:/Users/stevesun/.m2/repository/org/springframework/spring-webmvc/4.1.6.RELEASE/spring-webmvc-4.1.6.RELEASE.jar:/Users/stevesun/.m2/repository/org/springframework/spring-web/4.1.6.RELEASE/spring-web-4.1.6.RELEASE.jar:/Users/stevesun/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.6.0/jackson-annotations-2.6.0.jar:/Users/stevesun/.m2/repository/com/fasterxml/jackson/core/jackson-databind/2.4.1.3/jackson-databind-2.4.1.3.jar:/Users/stevesun/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.4.1.1/jackson-core-2.4.1.1.jar:/Users/stevesun/.m2/repository/org/codehaus/jackson/jackson-core-asl/1.9.13/jackson-core-asl-1.9.13.jar:/Users/stevesun/.m2/repository/org/codehaus/jackson/jackson-mapper-asl/1.9.13/jackson-mapper-asl-1.9.13.jar:/Users/stevesun/.m2/repository/javax/mail/mail/1.5.0-b01/mail-1.5.0-b01.jar:/Users/stevesun/.m2/repository/javax/activation/activation/1.1/activation-1.1.jar:/Users/stevesun/.m2/repository/org/apache/avro/avro/1.8.1/avro-1.8.1.jar:/Users/stevesun/.m2/repository/com/thoughtworks/paranamer/paranamer/2.7/paranamer-2.7.jar:/Users/stevesun/.m2/repository/org/xerial/snappy/snappy-java/1.1.1.3/snappy-java-1.1.1.3.jar:/Users/stevesun/.m2/repository/org/apache/commons/commons-compress/1.8.1/commons-compress-1.8.1.jar:/Users/stevesun/.m2/repository/org/tukaani/xz/1.5/xz-1.5.jar:/Users/stevesun/.m2/repository/org/slf4j/slf4j-api/1.7.7/slf4j-api-1.7.7.jar:/Applications/IntelliJ IDEA CE.app/Contents/lib/idea_rt.jar" com.intellij.rt.execution.application.AppMain avro.Employee
Exception in thread "main" java.lang.ExceptionInInitializerError
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:123)
Caused by: java.lang.NullPointerException
    at org.apache.avro.Schema.parse(Schema.java:1225)
    at org.apache.avro.Schema$Parser.parse(Schema.java:1032)
    at org.apache.avro.Schema$Parser.parse(Schema.java:1004)
    at org.apache.avro.Schema.parse(Schema.java:1066)
    at avro.Employee.<clinit>(Employee.java:28)
    ... 3 more

Process finished with exit code 1

Line numbers don't match exactly, but it's this line: https://github.com/rfoldes/Avro-Test/blob/master/src/avro/Employee.java#L28 in the master branch that throws it.

Any ideas/fix please?

rohitkapoor1 commented 7 years ago

try with:

SCHEMA = new Schema.Parser().parse(new File("Employee.avsc")); SCHEMA2 = new Schema.Parser().parse(new File("Employee2.avsc"));

sold877 commented 6 years ago

final InputStream pageViewRegionSchema = PageStream.class.getClassLoader() .getResourceAsStream("apache/src/main/avro/pageviewregion.avsc"); final Schema schema = new Schema.Parser().parse(pageViewRegionSchema);

when run the program , it display error : How to fix ?

Exception in thread "main" java.lang.NullPointerException at org.apache.avro.Schema.parse(Schema.java:1225) at org.apache.avro.Schema$Parser.parse(Schema.java:1032) at org.apache.avro.Schema$Parser.parse(Schema.java:1004) at com.kafka.stream.apache.PageStream.main(PageStream.java:90)