Java 添加文档时出现内部服务器错误Solr

我使用URL抓取站点并从这些站点获取数据……我使用solr 3.4.0和nutch 1.9。
它工作正常，但从上周开始，我突然发现以下错误：

 2015-06-18 18:32:49,718 INFO  indexer.IndexingFilters - Adding org.apache.nutch.indexer.anchor.AnchorIndexingFilter
2015-06-18 18:32:53,531 INFO  solr.SolrMappingReader - source: content dest: content
2015-06-18 18:32:53,531 INFO  solr.SolrMappingReader - source: site dest: site
2015-06-18 18:32:53,531 INFO  solr.SolrMappingReader - source: title dest: title
2015-06-18 18:32:53,531 INFO  solr.SolrMappingReader - source: host dest: host
2015-06-18 18:32:53,531 INFO  solr.SolrMappingReader - source: segment dest: segment
2015-06-18 18:32:53,531 INFO  solr.SolrMappingReader - source: boost dest: boost
2015-06-18 18:32:53,531 INFO  solr.SolrMappingReader - source: digest dest: digest
2015-06-18 18:32:53,531 INFO  solr.SolrMappingReader - source: tstamp dest: tstamp
2015-06-18 18:32:53,531 INFO  solr.SolrMappingReader - source: url dest: id
2015-06-18 18:32:53,531 INFO  solr.SolrMappingReader - source: url dest: url
2015-06-18 18:32:54,484 INFO  solr.SolrWriter - Adding 1000 documents
2015-06-18 18:34:34,156 WARN  mapred.LocalJobRunner - job_local_0030
org.apache.solr.common.SolrException: Internal Server Error

Internal Server Error

request: http://host IP:port/solr/news/update?wt=javabin&version=2
    at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:430)
    at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:244)
    at org.apache.solr.client.solrj.request.AbstractUpdateRequest.process(AbstractUpdateRequest.java:105)
    at org.apache.solr.client.solrj.SolrServer.add(SolrServer.java:49)
    at org.apache.nutch.indexer.solr.SolrWriter.write(SolrWriter.java:81)
    at org.apache.nutch.indexer.IndexerOutputFormat$1.write(IndexerOutputFormat.java:54)
    at org.apache.nutch.indexer.IndexerOutputFormat$1.write(IndexerOutputFormat.java:44)
    at org.apache.hadoop.mapred.ReduceTask$3.collect(ReduceTask.java:440)
    at org.apache.nutch.indexer.IndexerMapReduce.reduce(IndexerMapReduce.java:166)
    at org.apache.nutch.indexer.IndexerMapReduce.reduce(IndexerMapReduce.java:51)
    at org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:463)
    at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:411)
    at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:216)
2015-06-18 18:34:35,062 ERROR solr.SolrIndexer - java.io.IOException: Job failed!
2015-06-18 18:34:35,140 INFO  solr.SolrDeleteDuplicates - SolrDeleteDuplicates: starting at 2015-06-18 18:34:35
2015-06-18 18:34:35,140 INFO  solr.SolrDeleteDuplicates - SolrDeleteDuplicates: Solr url: http://Host IP:Port/solr/news
2015-06-18 18:36:52,718 WARN  mapred.LocalJobRunner - job_local_0031
java.lang.NullPointerException
    at org.apache.hadoop.io.Text.encode(Text.java:388)
    at org.apache.hadoop.io.Text.set(Text.java:178)
    at org.apache.nutch.indexer.solr.SolrDeleteDuplicates$SolrInputFormat$1.next(SolrDeleteDuplicates.java:270)
    at org.apache.nutch.indexer.solr.SolrDeleteDuplicates$SolrInputFormat$1.next(SolrDeleteDuplicates.java:241)
    at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.moveToNext(MapTask.java:192)
    at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.next(MapTask.java:176)
    at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:48)
    at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:358)
    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)
    at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:177)

任何人都可以帮我消除这个错误。提前谢谢

solr日志告诉我这个错误：org.apache.solr.update.SolrIndexWriter 严重：SolrIndexWriter在finalize（）之前未关闭，表示存在错误--可能存在资源泄漏

org.apache.solr.common.SolrException日志

---

严重：org.apache.lucene.store.lockOcctainFailedException:Lock-Get超时：NativeFSLock

Solr日志可能比Nutch日志更有用，因为Solr服务器似乎响应500个内部服务器错误Solr日志文件位于何处？我得到了Solr日志文件500个内部服务器错误的解决方案是什么。