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我一直在尝试使用Cloudera搜索又名Apache Solr来索引pdf文档。首先,我能够对Twitter推文进行索引。后来我尝试索引PDF文件。我已使用默认架构使用solrctl
创建了相应的集合。我使用的morphline文件(我已经掩盖zkHost这里的IP地址)...使用Cloudera索引PDF文档搜索
solrLocator : {
# Name of solr collection
#collection : collection1
collection : pdfs
# ZooKeeper ensemble
#zkHost : "127.0.0.1:2181/solr"
zkHost : "xxx.xxx.xxx.xxx:2181,xxx.xxx.xxx.xxx:2181/solr"
# The maximum number of documents to send to Solr per network batch (throughput knob)
# batchSize : 100
}
morphlines : [
{
id : morphlinepdfs
importCommands : ["org.kitesdk.**", "org.apache.solr.**"]
commands : [
{ detectMimeType { includeDefaultMimeTypes : true } }
{
solrCell {
solrLocator : ${solrLocator}
captureAttr : true
lowernames : true
capture : [id, title, author, content, content_type, subject, description, keywords, category, resourcename, url, last_modified, links]
parsers : [ { parser : org.apache.tika.parser.pdf.PDFParser } ]
}
}
{ generateUUID { field : id } }
{ sanitizeUnknownSolrFields { solrLocator : ${solrLocator} } }
{ loadSolr: { solrLocator : ${solrLocator} } }
]
}
]
PDF格式的元数据字段在Schema.xml文件,如...
<field name="title" type="text_general" indexed="true" stored="true" multiValued="true"/>
<field name="subject" type="text_general" indexed="true" stored="true"/>
<field name="description" type="text_general" indexed="true" stored="true"/>
<field name="comments" type="text_general" indexed="true" stored="true"/>
<field name="author" type="text_general" indexed="true" stored="true"/>
<field name="keywords" type="text_general" indexed="true" stored="true"/>
<field name="category" type="text_general" indexed="true" stored="true"/>
<field name="resourcename" type="text_general" indexed="true" stored="true"/>
<field name="url" type="text_general" indexed="true" stored="true"/>
<field name="content_type" type="string" indexed="true" stored="true" multiValued="true"/>
<field name="last_modified" type="date" indexed="true" stored="true"/>
<field name="links" type="string" indexed="true" stored="true" multiValued="true"/>
但在solr/select查询输出中,我只获取内容和内容类型字段。我如何获得solr前端查询中的所有元数据?我是否需要修改schema.xml或相应的morphline文件?我也可以索引PDF内容中的字段吗?
我用于索引PDF文件中的命令是:
hadoop --config /etc/hadoop/conf.cloudera.yarn jar /usr/lib/solr/contrib/mr/search-mr-1.0.0-cdh5.8.2-job.jar org.apache.solr.hadoop.MapReduceIndexerTool -D 'mapred.child.java.opts=-Xmx500m' --log4j /usr/share/doc/search-1.0.0+cdh5.8.2+0/examples/solr-nrt/log4j.properties --morphline-file /usr/share/doc/search-1.0.0+cdh5.8.2+0/examples/solr-nrt/test-morphlines/solrPDF.conf --output-dir hdfs://xxxxxx:8020/user/root/outdir --verbose --go-live --zk-host xxxxx:2181/solr --collection pdfs hdfs://xxxxxx:8020/user/root/indir
预先感谢。