Eu tenho um site hospedado na minha máquina local que estou tentando rastrear com Nutch e indexar no Solr (ambos também na minha máquina local). Instalei o Solr 4.6.1 e o Nutch 1.7 de acordo com as instruções fornecidas no site do Nutch (http://wiki.apache.org/nutch/NutchTutorial) e tenho o Solr em execução no meu navegador sem problemas.

Estou executando o seguinte comando:

bin/nutch crawl urls -solr http://localhost:8983/solr/ -depth 1 -topN 2

O rastreamento está funcionando bem, mas quando tenta colocar os dados no Solr, falha com a seguinte saída:

Indexer: starting at 2014-02-06 16:29:28
Indexer: deleting gone documents: false
Indexer: URL filtering: false
Indexer: URL normalizing: false
Active IndexWriters :
SOLRIndexWriter
    solr.server.url : URL of the SOLR instance (mandatory)
    solr.commit.size : buffer size when sending to SOLR (default 1000)
    solr.mapping.file : name of the mapping file for fields (default solrindex-mapping.xml)
    solr.auth : use authentication (default false)
    solr.auth.username : use authentication (default false)
    solr.auth : username for authentication
    solr.auth.password : password for authentication


Exception in thread "main" java.io.IOException: Job failed!
    at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1357)
    at org.apache.nutch.indexer.IndexingJob.index(IndexingJob.java:123)
    at org.apache.nutch.indexer.IndexingJob.index(IndexingJob.java:81)
    at org.apache.nutch.indexer.IndexingJob.index(IndexingJob.java:65)
    at org.apache.nutch.crawl.Crawl.run(Crawl.java:155)
    at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
    at org.apache.nutch.crawl.Crawl.main(Crawl.java:55)

Eu fui ao diretório de logs do Nutch e segui o arquivo hadoop.log, ele mostra o seguinte:

2014-02-06 16:29:28,920 INFO  solr.SolrIndexWriter - Indexing 1 documents
2014-02-06 16:29:28,921 INFO  httpclient.HttpMethodDirector - I/O exception (org.apache.commons.httpclient.NoHttpResponseException) caught when processing request: The server localhost failed to respond
2014-02-06 16:29:28,921 INFO  httpclient.HttpMethodDirector - Retrying request
2014-02-06 16:29:28,924 WARN  mapred.LocalJobRunner - job_local331896790_0009
java.io.IOException
    at org.apache.nutch.indexwriter.solr.SolrIndexWriter.makeIOException(SolrIndexWriter.java:173)
    at org.apache.nutch.indexwriter.solr.SolrIndexWriter.close(SolrIndexWriter.java:159)
    at org.apache.nutch.indexer.IndexWriters.close(IndexWriters.java:118)
    at org.apache.nutch.indexer.IndexerOutputFormat$1.close(IndexerOutputFormat.java:44)
    at org.apache.hadoop.mapred.ReduceTask$OldTrackingRecordWriter.close(ReduceTask.java:467)
    at org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:535)
    at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:421)
    at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:398)
Caused by: org.apache.solr.client.solrj.SolrServerException: java.net.SocketException: Connection reset
    at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:478)
    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.nutch.indexwriter.solr.SolrIndexWriter.close(SolrIndexWriter.java:155)
    ... 6 more
Caused by: java.net.SocketException: Connection reset
    at java.net.SocketInputStream.read(SocketInputStream.java:168)
    at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
    at java.io.BufferedInputStream.read(BufferedInputStream.java:237)
    at org.apache.commons.httpclient.HttpParser.readRawLine(HttpParser.java:78)
    at org.apache.commons.httpclient.HttpParser.readLine(HttpParser.java:106)
    at org.apache.commons.httpclient.HttpConnection.readLine(HttpConnection.java:1116)
    at org.apache.commons.httpclient.HttpMethodBase.readStatusLine(HttpMethodBase.java:1973)
    at org.apache.commons.httpclient.HttpMethodBase.readResponse(HttpMethodBase.java:1735)
    at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1098)
    at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398)
    at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
    at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
    at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
    at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:422)

No entanto, ainda consigo acessar o Solr no meu navegador muito bem. Esta é minha primeira tentativa na Solr / Nutch - qualquer ajuda daqueles com mais conhecimento seria muito apreciada. Obrigado.