[
https://issues.apache.org/jira/browse/TRAFODION-3126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16530613#comment-16530613
]
ASF GitHub Bot commented on TRAFODION-3126:
-------------------------------------------
Github user sureshsubbiah commented on a diff in the pull request:
https://github.com/apache/trafodion/pull/1626#discussion_r199655367
--- Diff: core/sql/src/main/java/org/trafodion/sql/HDFSClient.java ---
@@ -126,6 +128,16 @@
catch (IOException ioe) {
throw new RuntimeException("Exception in HDFSClient static
block", ioe);
}
+ try {
+ boolean alluxioFs = defaultFs_ instanceof
alluxio.hadoop.FileSystem;
+ }
+ catch (Throwable rte)
+ {
+ // Ignore the exception. It is not needed for alluxio to be
installed
+ // for the methods of this class to work if
+ // alluxio filesystem is NOT required
+ alluxioNotInstalled_ = true;
--- End diff --
Can you please explain what error we get if the file to be read is an
alluxio file and alluxio is not installed?
> Refactored HDFS client implementation should also support Alluxio file system
> -----------------------------------------------------------------------------
>
> Key: TRAFODION-3126
> URL: https://issues.apache.org/jira/browse/TRAFODION-3126
> Project: Apache Trafodion
> Issue Type: Sub-task
> Components: sql-exe
> Reporter: Selvaganesan Govindarajan
> Assignee: Selvaganesan Govindarajan
> Priority: Major
>
> New implementation returns the following error when Alluxio file system is
> involved.
> *** ERROR[8447] An error occurred during hdfs access. Error Detail:
> SETUP_HDFS_SCAN java.util.concurrent.ExecutionException:
> java.lang.UnsupportedOperationException: Byte-buffer read unsupported by
> input stream
> java.util.concurrent.FutureTask.report(FutureTask.java:122)
> java.util.concurrent.FutureTask.get(FutureTask.java:192)
> org.trafodion.sql.HDFSClient.trafHdfsReadBuffer(HDFSClient.java:278)
> org.trafodion.sql.HdfsScan.trafHdfsRead(HdfsScan.java:201) Caused by
> java.lang.UnsupportedOperationException: Byte-buffer read unsupported by
> input stream
> org.apache.hadoop.fs.FSDataInputStream.read(FSDataInputStream.java:150)
> org.trafodion.sql.HDFSClient$HDFSRead.call(HDFSClient.java:172)
> java.util.concurrent.FutureTask.run(FutureTask.java:266)
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> java.lang.Thread.run(Thread.java:745)
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
