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https://issues.apache.org/jira/browse/GORA-188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13508942#comment-13508942
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Alfonso Nishikawa commented on GORA-188:
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Found why this happens, but don't fully understand why, since only happens
after applying GORA-174v3.patch.
After serializing, Bytebuffer stays read in last position (in "content" field
"pos"). Calling "rewind()" on content before assert() makes test success. Will
check unpatched version to know why is this happening :\
> testSerdeWebPage failure - PersistentBase#equals() fails with map fields
> ------------------------------------------------------------------------
>
> Key: GORA-188
> URL: https://issues.apache.org/jira/browse/GORA-188
> Project: Apache Gora
> Issue Type: Bug
> Components: gora-core
> Affects Versions: 0.2.1
> Reporter: Alfonso Nishikawa
> Assignee: Alfonso Nishikawa
> Priority: Minor
> Fix For: 0.3
>
> Attachments: org.apache.gora.mapreduce.TestPersistentSerialization.txt
>
>
> As shown here:
> {code}
> junit.framework.AssertionFailedError:
> expected:<org.apache.gora.examples.generated.WebPage@4b49ab6f {
> "url":"http://bar.com/";
> "content":"java.nio.HeapByteBuffer[pos=1 lim=1 cap=1]"
> "parsedContent":"[1]"
> "outlinks":"{http://bazbar.com=a8, http://baz.com/1.jsp&q=barbaz&p=foo=a6,
> http://baz.com/1.jsp&q=barbaz=a5, http://bar.com/3.jsp=a3,
> http://bar.com/1.html=a4, http://foo.com/1.html=a1, http://foo.com/2.html=a2,
> http://baz.com/1.jsp&q=foo=a7}";
> "metadata":"org.apache.gora.examples.generated.Metadata@51a {
> "version":"1"
> "data":"{metakey=metavalue}"
> }"
> }> but was:<org.apache.gora.examples.generated.WebPage@4b6d94c0 {
> "url":"http://bar.com/";
> "content":"java.nio.HeapByteBuffer[pos=0 lim=1 cap=1]"
> "parsedContent":"[1]"
> "outlinks":"{http://baz.com/1.jsp&q=barbaz=a5,
> http://baz.com/1.jsp&q=barbaz&p=foo=a6, http://bazbar.com=a8,
> http://bar.com/3.jsp=a3, http://foo.com/1.html=a1, http://bar.com/1.html=a4,
> http://foo.com/2.html=a2, http://baz.com/1.jsp&q=foo=a7}";
> "metadata":"org.apache.gora.examples.generated.Metadata@51a {
> "version":"1"
> "data":"{metakey=metavalue}"
> }"
> }>
> at junit.framework.Assert.fail(Assert.java:50)
> at junit.framework.Assert.failNotEquals(Assert.java:287)
> at junit.framework.Assert.assertEquals(Assert.java:67)
> at junit.framework.Assert.assertEquals(Assert.java:74)
> at
> org.apache.gora.util.TestIOUtils.testSerializeDeserialize(TestIOUtils.java:125)
> at
> org.apache.gora.mapreduce.TestPersistentSerialization.testSerdeWebPage(TestPersistentSerialization.java:85)
> {code}
> ---the difference is the order of the outlinks. I guess they should be
> considered equal. Am I wrong?---
> -- edited: FAILS after serializing because for serialization, bytebuffer has
> to be read and position index gets updated. This happens in
> TestIOUtils.java:112-IOUtils.serialize(conf, dos , before,
> (Class<T>)before.getClass());
> See comment.s
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