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Fangzhou commented on ARROW-192: -------------------------------- could you specify the details of doing this?I followed what you said but the problem still exists. Following is my steps: 1. git clone project apache/arrow 2. setup maven,configure MAVEN_HOME,PATH 3. execute mvn generate-sources command under folder ./arrow , ./arrow/java and ./arrow/java/vector (pom.xml) Also, I find those unresolved classes also cannot be seen in Mirror of Apache Arrow folder https://github.com/apache/arrow/tree/master/java/vector/src/main/java/org/apache/arrow/vector > some classes cannot be resolved for vector component > ---------------------------------------------------- > > Key: ARROW-192 > URL: https://issues.apache.org/jira/browse/ARROW-192 > Project: Apache Arrow > Issue Type: Bug > Components: Java - Vectors > Reporter: Fangzhou > Attachments: 1 (2).png, 2 (2).png > > > some classes under package arrow Vector has compiling error because some > dependency class cannot be resolved(not exists). Affected packages of classes > can be seen in attachment 2(2).png. -- This message was sent by Atlassian JIRA (v6.3.4#6332)