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https://issues.apache.org/jira/browse/HAWQ-1346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15877291#comment-15877291
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Tian Hong Wang edited comment on HAWQ-1346 at 2/22/17 2:14 AM:
---------------------------------------------------------------
[~shivram]
Thanks for your help. Could you tell me how to configure pxf profile to enable
LineRecordReader?
was (Author: tianhonglouis):
[~shivram]
Thanks for your help. Could you tell me how to configure pxf profile to
LineRecordReader?
> If using WebHdfsFileSystem as default Filesytem, it will cause cast type
> exception
> ----------------------------------------------------------------------------------
>
> Key: HAWQ-1346
> URL: https://issues.apache.org/jira/browse/HAWQ-1346
> Project: Apache HAWQ
> Issue Type: Bug
> Components: PXF
> Reporter: Tian Hong Wang
> Assignee: Shivram Mani
> Priority: Critical
>
> In
> incubator-hawq/pxf/pxf-hdfs/src/main/java/org/apache/hawq/pxf/plugins/hdfs/ChunkRecordReader.java:
> private DFSInputStream getInputStream() {
> return (DFSInputStream) (fileIn.getWrappedStream());
> }
> If using WebHdfsFileSystem as default Filesytem, it will cause cast type
> exception from WebHdfsInputStream to DFSInputStream.
> The following is detailed exception.
> java.lang.ClassCastException:
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$WebHdfsInputStream cannot be
> cast to org.apache.hadoop.hdfs.DFSInputStream
> at
> org.apache.hawq.pxf.plugins.hdfs.ChunkRecordReader.getInputStream(ChunkRecordReader.java:76)
> at
> org.apache.hawq.pxf.plugins.hdfs.ChunkRecordReader.<init>(ChunkRecordReader.java:112)
> at
> org.apache.hawq.pxf.plugins.hdfs.LineBreakAccessor.getReader(LineBreakAccessor.java:64)
> at
> org.apache.hawq.pxf.plugins.hdfs.HdfsSplittableDataAccessor.getNextSplit(HdfsSplittableDataAccessor.java:114)
> at
> org.apache.hawq.pxf.plugins.hdfs.HdfsSplittableDataAccessor.openForRead(HdfsSplittableDataAccessor.java:83)
> at
> org.apache.hawq.pxf.service.ReadBridge.beginIteration(ReadBridge.java:73)
> at
> org.apache.hawq.pxf.service.rest.BridgeResource$1.write(BridgeResource.java:132)
> at
> com.sun.jersey.core.impl.provider.entity.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:71)
> at
> com.sun.jersey.core.impl.provider.entity.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:57)
> at
> com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:306)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1437)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
> at
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
> at
> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
> at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
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