[SOLR-7512] SolrOutputFormat creates an invalid solr.xml in the solr home zip for MapReduceIndexerTool

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 5.1
• Fix Version/s: 5.2.1, 5.3, 6.0
• Component/s: contrib - MapReduce
• Assignee: Mark Miller
• Reporter: Adam McElwee
• Created: 07/May/15 23:54
• Updated: 09/May/16 18:58
• Resolved: 16/Jun/15 11:45

Description

Sometime after Solr 4.9, the `MapReduceIndexerTool` got busted because invalid `solr.xml` contents were being written to the solr home dir zip. My guess is that a 5.0 change made the invalid file start to matter.

The error manifests as:

Error: java.lang.IllegalStateException: Failed to initialize record writer for org.apache.solr.hadoop.MapReduceIndexerTool/SolrMapper, attempt_1430953999892_0012_r_000001_1
        at org.apache.solr.hadoop.SolrRecordWriter.<init>(SolrRecordWriter.java:126)
        at org.apache.solr.hadoop.SolrOutputFormat.getRecordWriter(SolrOutputFormat.java:163)
        at org.apache.hadoop.mapred.ReduceTask$NewTrackingRecordWriter.<init>(ReduceTask.java:569)
        at org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:643)
        at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:394)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:175)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:170)
Caused by: org.apache.solr.common.SolrException: org.xml.sax.SAXParseException; Premature end of file.
        at org.apache.solr.core.Config.<init>(Config.java:156)
        at org.apache.solr.core.SolrXmlConfig.fromInputStream(SolrXmlConfig.java:127)
        at org.apache.solr.core.SolrXmlConfig.fromFile(SolrXmlConfig.java:110)
        at org.apache.solr.core.SolrXmlConfig.fromSolrHome(SolrXmlConfig.java:138)
        at org.apache.solr.core.CoreContainer.<init>(CoreContainer.java:142)
        at org.apache.solr.hadoop.SolrRecordWriter.createEmbeddedSolrServer(SolrRecordWriter.java:162)
        at org.apache.solr.hadoop.SolrRecordWriter.<init>(SolrRecordWriter.java:119)
        ... 9 more
Caused by: org.xml.sax.SAXParseException; Premature end of file.
        at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
        at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source)
        at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
        at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
        at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
        at org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown Source)
        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
        at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
        at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
        at org.apache.solr.core.Config.<init>(Config.java:145)
        ... 15 more

The last version that I've successfully used `MapReduceIndexerTool` was 4.9, and I verified that this patch resolves the issue for me (testing on 5.1). I spent a couple hours trying to write a simple test case to exhibit the error, but I haven't quite figured out how to deal with the

java.security.AccessControlException: java.io.FilePermission ...

errors.

Pull request for bugfix here