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https://issues.apache.org/jira/browse/SOLR-5597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13900283#comment-13900283
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Gunnlaugur Thor Briem edited comment on SOLR-5597 at 2/13/14 12:49 PM:
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Same error occurs with a field of type integer. I suggest changing title to
“DataImportHandler fails if integer column used as key or value in cache”. I'm
working around this by casting all columns involved to TEXT:
{code:xml}
<entity name="parent" dataSource="d" query="SELECT id, xyz, child_id::TEXT FROM
parent;">
<entity name="child" dataSource="d" query="SELECT id::TEXT, abc FROM child;"
processor="CachedSqlEntityProcessor"
where="id=par.child_id"/>
</entity>
{code}
(As the use of the legacy CachedSqlEntityProcessor suggests, I encountered this
while trying an upgrade from Solr 3.5, where integer columns were working.)
Full stack trace that I got:
{code}
8233662 [Thread-23] ERROR org.apache.solr.handler.dataimport.DataImporter ?
Full Import failed:java.lang.RuntimeException: java.lang.RuntimeException:
org.apache.solr.handler.dataimport.DataImportHandlerException:
java.lang.ClassCastException: java.lang.String cannot be cast to
java.lang.Integer
at
org.apache.solr.handler.dataimport.DocBuilder.execute(DocBuilder.java:270)
at
org.apache.solr.handler.dataimport.DataImporter.doFullImport(DataImporter.java:411)
at
org.apache.solr.handler.dataimport.DataImporter.runCmd(DataImporter.java:476)
at
org.apache.solr.handler.dataimport.DataImporter$1.run(DataImporter.java:457)
Caused by: java.lang.RuntimeException:
org.apache.solr.handler.dataimport.DataImportHandlerException:
java.lang.ClassCastException: java.lang.String cannot be cast to
java.lang.Integer
at
org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:410)
at
org.apache.solr.handler.dataimport.DocBuilder.doFullDump(DocBuilder.java:323)
at
org.apache.solr.handler.dataimport.DocBuilder.execute(DocBuilder.java:231)
... 3 more
Caused by: org.apache.solr.handler.dataimport.DataImportHandlerException:
java.lang.ClassCastException: java.lang.String cannot be cast to
java.lang.Integer
at
org.apache.solr.handler.dataimport.DataImportHandlerException.wrapAndThrow(DataImportHandlerException.java:63)
at
org.apache.solr.handler.dataimport.EntityProcessorWrapper.nextRow(EntityProcessorWrapper.java:246)
at
org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:469)
at
org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:495)
at
org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:408)
... 5 more
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to
java.lang.Integer
at java.lang.Integer.compareTo(Integer.java:37)
at java.util.TreeMap.getEntry(TreeMap.java:328)
at java.util.TreeMap.get(TreeMap.java:255)
at
org.apache.solr.handler.dataimport.SortedMapBackedCache.iterator(SortedMapBackedCache.java:147)
at
org.apache.solr.handler.dataimport.DIHCacheSupport.getIdCacheData(DIHCacheSupport.java:179)
at
org.apache.solr.handler.dataimport.DIHCacheSupport.getCacheData(DIHCacheSupport.java:145)
at
org.apache.solr.handler.dataimport.EntityProcessorBase.getNext(EntityProcessorBase.java:129)
at
org.apache.solr.handler.dataimport.SqlEntityProcessor.nextRow(SqlEntityProcessor.java:75)
at
org.apache.solr.handler.dataimport.EntityProcessorWrapper.nextRow(EntityProcessorWrapper.java:243)
... 8 more
{code}
was (Author: gthb):
Same error occurs with a field of type integer. I suggest changing title to
“DataImportHandler fails if integer column used as key or value in cache”. I'm
working around this by casting all columns involved to TEXT:
{code:xml}
<entity name="parent" dataSource="d" query="SELECT id, xyz, child_id::TEXT FROM
parent;">
<entity name="child" dataSource="d" query="SELECT id::TEXT, abc FROM child;"
processor="CachedSqlEntityProcessor"
where="id=par.child_id"/>
</entity>
{code}
(As the use of the legacy CachedSqlEntityProcessor suggests, I encountered this
while trying an upgrade from Solr 3.5, where integer columns were working.)
> ClassCastException occurs when importing CLOB-fields using SqlEntityProcessor
> and SortedMapBackedCache
> ------------------------------------------------------------------------------------------------------
>
> Key: SOLR-5597
> URL: https://issues.apache.org/jira/browse/SOLR-5597
> Project: Solr
> Issue Type: Bug
> Components: contrib - DataImportHandler
> Affects Versions: 4.6
> Reporter: Henrik Wingerei
>
> Using the SqlEntityProcessor with the SortedMapBackedCache as cache
> implementation, gives the following ClassCastException when trying to import
> a field of type oracle.sql.CLOB.
> 2014-01-02 09:32:19,143 [ERROR] [Thread-54] Exception in entity :
> <field-name>:java.lang.ClassCastException: oracle.sql.CLOB cannot be cast to
> java.lang.Comparable
> at java.util.TreeMap.getEntry(TreeMap.java:325)
> at java.util.TreeMap.get(TreeMap.java:255)
> at
> org.apache.solr.handler.dataimport.SortedMapBackedCache.add(SortedMapBackedCache.java:61)
> at
> org.apache.solr.handler.dataimport.DIHCacheSupport.populateCache(DIHCacheSupport.java:124)
> at
> org.apache.solr.handler.dataimport.DIHCacheSupport.getSimpleCacheData(DIHCacheSupport.java:199)
> at
> org.apache.solr.handler.dataimport.DIHCacheSupport.getCacheData(DIHCacheSupport.java:147)
> at
> org.apache.solr.handler.dataimport.EntityProcessorBase.getNext(EntityProcessorBase.java:129)
> at
> org.apache.solr.handler.dataimport.SqlEntityProcessor.nextRow(SqlEntityProcessor.java:75)
> at
> org.apache.solr.handler.dataimport.EntityProcessorWrapper.nextRow(EntityProcessorWrapper.java:243)
> at
> org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:469)
> at
> org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:495)
> at
> org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:408)
> at
> org.apache.solr.handler.dataimport.DocBuilder.doFullDump(DocBuilder.java:323)
> at
> org.apache.solr.handler.dataimport.DocBuilder.execute(DocBuilder.java:231)
> at
> org.apache.solr.handler.dataimport.DataImporter.doFullImport(DataImporter.java:411)
> at
> org.apache.solr.handler.dataimport.DataImporter.runCmd(DataImporter.java:476)
> at
> org.apache.solr.handler.dataimport.DataImporter$1.run(DataImporter.java:457)
> -- org.apache.solr.handler.dataimport.EntityProcessorWrapper
> It seems that this occurs because the SortedMapBackedCache uses a
> java.util.TreeMap as the underlying cache, and TreeMap requires that all
> elements implements the java.lang.Comparable interface. However
> oracle.sql.CLOB does not implement Comparable and the import fails when the
> TreeMap implementation tries to cast the element to a Comparable (this occurs
> on line 325 in TreeMap.java - java version 1.6.0_33).
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