我们的Solr系统有两个核心（Solr版本为3.6.1）。当我在专用Solr服务器上调用下面的命令行来添加并索引文件时：
java -Durl=http://solrprod:8080/solr/original/update -jar /home/solr/solr3/biomina/solr/post.jar /home/solr/tmp/2008/c2m-dump-01.noDEID_clean.xml
我在等待大约6分钟后，在/usr/share/tomcat7/logs/solr.2013-12-11.log文件中遇到了一个异常：
SEVERE: org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@/home/solr/solr3/biomina/solr/original/data/index/write.lock
（您可以在此消息的末尾看到详细的输出结果）。
我试图修改锁的超时时间（将
writeLockTimeout设置为300000），但这并没有解决问题。我没有使用任何自定义脚本，只是使用Solr 3.1.6附带的post.jar来添加和索引。有什么想法可以改变什么以摆脱这个错误，并成功地将即将添加到Solr中的XML文件索引？
/home/solr/solr3/biomina/solr/solr.xml的内容：<?xml version="1.0" encoding="UTF-8" ?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<!--
All (relative) paths are relative to the installation path
persistent: Save changes made via the API to this file
sharedLib: path to a lib directory that will be shared across all cores
-->
<solr persistent="true">
<!--
adminPath: RequestHandler path to manage cores.
If 'null' (or absent), cores will not be manageable via request handler
-->
<cores adminPath="/admin/cores">
<core name="original" instanceDir="original" />
<core name="deidentified" instanceDir="deidentified" />
</cores>
</solr>
solrconfig.xml相关部分（对于名为original的核心）：
<indexConfig>
<!-- maxFieldLength specifies max number of *tokens* indexed per
field. Default: 10000 -->
<!-- <maxFieldLength>10000</maxFieldLength> -->
<!-- Maximum time to wait for a write lock (ms) for an IndexWriter.
Default: 1000 -->
<writeLockTimeout>300000</writeLockTimeout>
solrconfig.xml相关部分（针对名为deidentified的核心）：
<indexConfig>
<!-- maxFieldLength specifies max number of *tokens* indexed per
field. Default: 10000 -->
<!-- <maxFieldLength>10000</maxFieldLength> -->
<!-- Maximum time to wait for a write lock (ms) for an IndexWriter.
Default: 1000 -->
<writeLockTimeout>300000</writeLockTimeout>
异常详细输出
Dec 11, 2013 11:27:25 AM org.apache.solr.core.SolrCore execute
INFO: [original] webapp=/solr path=/update params={} status=500 QTime=300070
Dec 11, 2013 11:32:25 AM org.apache.solr.common.SolrException log
SEVERE: org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: NativeFSLock@/home/solr/solr3/biomina/solr/original/data/index/write.lock
at org.apache.lucene.store.Lock.obtain(Lock.java:84)
at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:1098)
at org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:84)
at org.apache.solr.update.UpdateHandler.createMainIndexWriter(UpdateHandler.java:101)
at org.apache.solr.update.DirectUpdateHandler2.openWriter(DirectUpdateHandler2.java:171)
at org.apache.solr.update.DirectUpdateHandler2.addDoc(DirectUpdateHandler2.java:219)
at org.apache.solr.update.processor.RunUpdateProcessor.processAdd(RunUpdateProcessorFactory.java:61)
at org.apache.solr.update.processor.LogUpdateProcessor.processAdd(LogUpdateProcessorFactory.java:115)
at org.apache.solr.handler.XMLLoader.processUpdate(XMLLoader.java:157)
at org.apache.solr.handler.XMLLoader.load(XMLLoader.java:79)
at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:58)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1376)
at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:365)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:260)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1156)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:626)
at java.lang.Thread.run(Thread.java:804)
Dec 11, 2013 11:32:25 AM org.apache.solr.core.SolrCore execute
INFO: [original] webapp=/solr path=/update params={} status=500 QTime=556916
系统详情：
uname -a
Linux solrprod 3.0.93-0.8-default #1 SMP Tue Aug 27 08:44:18 UTC 2013 (70ed288) x86_64 x86_64 x86_64 GNU/Linux
java -version
java version "1.7.0"
Java(TM) SE Runtime Environment (build pxa6470sr6-20131015_01(SR6))
IBM J9 VM (build 2.6, JRE 1.7.0 Linux amd64-64 Compressed References 20131013_170512 (JIT enabled, AOT enabled)
J9VM - R26_Java726_SR6_20131013_1510_B170512
JIT - r11.b05_20131003_47443
GC - R26_Java726_SR6_20131013_1510_B170512_CMPRSS
J9CL - 20131013_170512)
JCL - 20131011_01 based on Oracle 7u45-b18
write.lock文件，然后启动Solr进程。 - Dexter Legaspi