pxf 如何使用？没有使用ambari安装hawq和pxf,两者都是手动编译安装的，创建了external表后，不能访问hdfs数据，
报错信息：ERROR：remote component error(0):(libchurl.c:897)
请问你是怎么编译的，我编译时一直报错> Task :pxf-jdbc:javadoc FAILED
FAILURE: Build failed with an exception.
- What went wrong: Execution failed for task ':pxf-jdbc:javadoc'. > Javadoc generation failed. Generated Javadoc options file (useful for troubleshooting): '/home/cube/Documents/HawqCode/pxf-code/hawq/pxf/pxf-jdbc/build/tmp/javadoc/javadoc.options'