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Posted to common-issues@hadoop.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2016/05/26 00:29:12 UTC
[jira] [Updated] (HADOOP-12724) Let BufferedFSInputStream implement
CanUnbuffer
[ https://issues.apache.org/jira/browse/HADOOP-12724?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ted Yu updated HADOOP-12724:
----------------------------
Description:
When trying to determine reason for test failure over in HBASE-9393, I saw the following exception:
{code}
testSeekTo[4](org.apache.hadoop.hbase.io.hfile.TestSeekTo) Time elapsed: 0.033 sec <<< ERROR!
java.lang.UnsupportedOperationException: this stream does not support unbuffering.
at org.apache.hadoop.fs.FSDataInputStream.unbuffer(FSDataInputStream.java:229)
at org.apache.hadoop.fs.FSDataInputStream.unbuffer(FSDataInputStream.java:227)
at org.apache.hadoop.hbase.io.hfile.HFile.pickReaderVersion(HFile.java:518)
at org.apache.hadoop.hbase.io.hfile.HFile.createReader(HFile.java:562)
at org.apache.hadoop.hbase.io.hfile.TestSeekTo.testSeekToInternals(TestSeekTo.java:307)
at org.apache.hadoop.hbase.io.hfile.TestSeekTo.testSeekTo(TestSeekTo.java:298)
{code}
Here is the cause:
{code}
java.lang.ClassCastException: org.apache.hadoop.fs.BufferedFSInputStream cannot be cast to org.apache.hadoop.fs.CanUnbuffer
{code}
See the comments starting with https://issues.apache.org/jira/browse/HBASE-9393?focusedCommentId=15105939&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15105939 for background on the HBase patch.
This issue is to make BufferedFSInputStream implement CanUnbuffer.
This would benefit hbase unit tests.
Thanks to [~cmccabe] for discussion.
was:
When trying to determine reason for test failure over in HBASE-9393, I saw the following exception:
{code}
testSeekTo[4](org.apache.hadoop.hbase.io.hfile.TestSeekTo) Time elapsed: 0.033 sec <<< ERROR!
java.lang.UnsupportedOperationException: this stream does not support unbuffering.
at org.apache.hadoop.fs.FSDataInputStream.unbuffer(FSDataInputStream.java:229)
at org.apache.hadoop.fs.FSDataInputStream.unbuffer(FSDataInputStream.java:227)
at org.apache.hadoop.hbase.io.hfile.HFile.pickReaderVersion(HFile.java:518)
at org.apache.hadoop.hbase.io.hfile.HFile.createReader(HFile.java:562)
at org.apache.hadoop.hbase.io.hfile.TestSeekTo.testSeekToInternals(TestSeekTo.java:307)
at org.apache.hadoop.hbase.io.hfile.TestSeekTo.testSeekTo(TestSeekTo.java:298)
{code}
Here is the cause:
{code}
java.lang.ClassCastException: org.apache.hadoop.fs.BufferedFSInputStream cannot be cast to org.apache.hadoop.fs.CanUnbuffer
{code}
See the comments starting with https://issues.apache.org/jira/browse/HBASE-9393?focusedCommentId=15105939&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15105939 for background on the HBase patch.
This issue is to make BufferedFSInputStream implement CanUnbuffer.
This would benefit hbase unit tests.
Thanks to [~cmccabe] for discussion.
> Let BufferedFSInputStream implement CanUnbuffer
> -----------------------------------------------
>
> Key: HADOOP-12724
> URL: https://issues.apache.org/jira/browse/HADOOP-12724
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Ted Yu
>
> When trying to determine reason for test failure over in HBASE-9393, I saw the following exception:
> {code}
> testSeekTo[4](org.apache.hadoop.hbase.io.hfile.TestSeekTo) Time elapsed: 0.033 sec <<< ERROR!
> java.lang.UnsupportedOperationException: this stream does not support unbuffering.
> at org.apache.hadoop.fs.FSDataInputStream.unbuffer(FSDataInputStream.java:229)
> at org.apache.hadoop.fs.FSDataInputStream.unbuffer(FSDataInputStream.java:227)
> at org.apache.hadoop.hbase.io.hfile.HFile.pickReaderVersion(HFile.java:518)
> at org.apache.hadoop.hbase.io.hfile.HFile.createReader(HFile.java:562)
> at org.apache.hadoop.hbase.io.hfile.TestSeekTo.testSeekToInternals(TestSeekTo.java:307)
> at org.apache.hadoop.hbase.io.hfile.TestSeekTo.testSeekTo(TestSeekTo.java:298)
> {code}
> Here is the cause:
> {code}
> java.lang.ClassCastException: org.apache.hadoop.fs.BufferedFSInputStream cannot be cast to org.apache.hadoop.fs.CanUnbuffer
> {code}
> See the comments starting with https://issues.apache.org/jira/browse/HBASE-9393?focusedCommentId=15105939&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15105939 for background on the HBase patch.
> This issue is to make BufferedFSInputStream implement CanUnbuffer.
> This would benefit hbase unit tests.
> Thanks to [~cmccabe] for discussion.
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