我将DSpace 1.8升级到DSpace 5.2。一切顺利，但索尔索引更新。它抱怨_1j0e.fnm中缺少文件solr/statistics/data/index。我该如何解决？这是index目录的例外情况和内容：
mylinux #> ant update_solr_indexes
Buildfile: /opt/dspace/dspace/target/dspace-installer/build.xml
update_solr_indexes:
[echo] Checking if any Solr indexes (/opt/dspace/deploy/solr/*) need upgrading...
[echo] Current version of Solr/Lucene: 4.10.2
check_solr_index:
[echo] Checking if the Solr index at /opt/dspace/deploy/solr/statistics/data/index/ is >= Solr 3.5.0
[echo] The Solr index in /opt/dspace/deploy/solr/statistics/data/index/ needs an upgrade to Solr 3.5.0
upgrade_solr_index:
[echo] Upgrading Solr/Lucene Index at /opt/dspace/deploy/solr/statistics/data/index/ to Solr/Lucene 3.5.0.
[echo] Upgrading the Solr index in /opt/dspace/deploy/solr/statistics/data/index/. Depending on the index size, this may take a while (please be patient)...
[java] Exception in thread "main" java.io.FileNotFoundException: /opt/dspace/deploy/solr/statistics/data/index/_1j0e.fnm (No such file or directory)
[java] at java.io.RandomAccessFile.open(Native Method)
[java] at java.io.RandomAccessFile.<init>(RandomAccessFile.java:241)
[java] at org.apache.lucene.store.MMapDirectory.openInput(MMapDirectory.java:214)
[java] at org.apache.lucene.store.FSDirectory.openInput(FSDirectory.java:345)
[java] at org.apache.lucene.index.FieldInfos.<init>(FieldInfos.java:74)
[java] at org.apache.lucene.index.IndexWriter.getFieldInfos(IndexWriter.java:1222)
[java] at org.apache.lucene.index.IndexWriter.getCurrentFieldInfos(IndexWriter.java:1238)
[java] at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:1171)
[java] at org.apache.lucene.index.IndexUpgrader.upgrade(IndexUpgrader.java:132)
[java] at org.apache.lucene.index.IndexUpgrader.main(IndexUpgrader.java:85)
mylinux #> ls -l
total 351716
-rw-r--r-- 1 dspace users 253833167 Set 1 22:00 _1j1m.fdt
-rw-r--r-- 1 dspace users 14114820 Set 1 22:00 _1j1m.fdx
-rw-r--r-- 1 dspace users 90 Set 1 22:00 _1j1m.fnm
-rw-r--r-- 1 dspace users 36393369 Set 1 22:00 _1j1m.frq
-rw-r--r-- 1 dspace users 28841681 Set 1 22:00 _1j1m.prx
-rw-r--r-- 1 dspace users 328616 Set 1 22:00 _1j1m.tii
-rw-r--r-- 1 dspace users 25362797 Set 1 22:00 _1j1m.tis
-rw-r--r-- 1 dspace users 498821 Set 2 10:06 _1j31.fdt
-rw-r--r-- 1 dspace users 25492 Set 2 10:06 _1j31.fdx
-rw-r--r-- 1 dspace users 90 Set 2 10:06 _1j31.fnm
-rw-r--r-- 1 dspace users 57288 Set 2 10:06 _1j31.frq
-rw-r--r-- 1 dspace users 55844 Set 2 10:06 _1j31.prx
-rw-r--r-- 1 dspace users 947 Set 2 10:06 _1j31.tii
-rw-r--r-- 1 dspace users 69004 Set 2 10:06 _1j31.tis
-rw-r--r-- 1 dspace users 1163 Set 2 10:27 _1j32.fdt
-rw-r--r-- 1 dspace users 76 Set 2 10:27 _1j32.fdx
-rw-r--r-- 1 dspace users 90 Set 2 10:27 _1j32.fnm
-rw-r--r-- 1 dspace users 98 Set 2 10:27 _1j32.frq
-rw-r--r-- 1 dspace users 4 Set 2 10:27 _1j32.nrm
-rw-r--r-- 1 dspace users 110 Set 2 10:27 _1j32.prx
-rw-r--r-- 1 dspace users 35 Set 2 10:27 _1j32.tii
-rw-r--r-- 1 dspace users 737 Set 2 10:27 _1j32.tis
-rw-r--r-- 1 dspace users 2073 Set 2 10:44 _1j33.fdt
-rw-r--r-- 1 dspace users 108 Set 2 10:44 _1j33.fdx
-rw-r--r-- 1 dspace users 90 Set 2 10:44 _1j33.fnm
-rw-r--r-- 1 dspace users 182 Set 2 10:44 _1j33.frq
-rw-r--r-- 1 dspace users 4 Set 2 10:44 _1j33.nrm
-rw-r--r-- 1 dspace users 233 Set 2 10:44 _1j33.prx
-rw-r--r-- 1 dspace users 35 Set 2 10:44 _1j33.tii
-rw-r--r-- 1 dspace users 996 Set 2 10:44 _1j33.tis
-rw-r--r-- 1 dspace users 1298 Set 2 11:00 _1j34.fdt
-rw-r--r-- 1 dspace users 68 Set 2 11:00 _1j34.fdx
-rw-r--r-- 1 dspace users 90 Set 2 11:00 _1j34.fnm
-rw-r--r-- 1 dspace users 112 Set 2 11:00 _1j34.frq
-rw-r--r-- 1 dspace users 4 Set 2 11:00 _1j34.nrm
-rw-r--r-- 1 dspace users 140 Set 2 11:00 _1j34.prx
-rw-r--r-- 1 dspace users 35 Set 2 11:00 _1j34.tii
-rw-r--r-- 1 dspace users 864 Set 2 11:00 _1j34.tis
-rw-r--r-- 1 dspace users 3121 Set 2 11:17 _1j35.fdt
-rw-r--r-- 1 dspace users 156 Set 2 11:17 _1j35.fdx
-rw-r--r-- 1 dspace users 90 Set 2 11:17 _1j35.fnm
-rw-r--r-- 1 dspace users 281 Set 2 11:17 _1j35.frq
-rw-r--r-- 1 dspace users 4 Set 2 11:17 _1j35.nrm
-rw-r--r-- 1 dspace users 360 Set 2 11:17 _1j35.prx
-rw-r--r-- 1 dspace users 35 Set 2 11:17 _1j35.tii
-rw-r--r-- 1 dspace users 1516 Set 2 11:17 _1j35.tis
-rw-r--r-- 1 dspace users 0 Set 2 11:18 _1j36.fdt
-rw-r--r-- 1 dspace users 0 Set 2 11:18 _1j36.fdx
-rw-r--r-- 1 dspace users 1398 Set 2 11:17 segments_1djh
-rw-r--r-- 1 dspace users 20 Set 2 11:17 segments.gen
-rw-r--r-- 1 dspace users 0 Set 2 11:18 write.lock
答案 0 :(得分：1)
在升级时执行ant步骤之前，必须关闭Web应用程序容器（可能是Tomcat）。当Tomcat运行时，索引目录的内容会不断变化，这很可能会引起关注。如果在运行Tomcat的升级过程中运行ant update，则可能会遇到写入锁定问题。