SOLR 4.4 增量索引

Question

当我通过以下方式开始完全导入时：

curl -X POST http://_master_host_:_port_/solr/dataimport-xml?command=full-import

它导致我们的索引增量更新。所以假设我们的库存数量是 900,000，它会突然被清除，变成 400 -> 1000 -> ... -> 900000（增量更新，而不是等待导入完成然后换出）。

我不知道为什么它会清除我们的索引，因为以前的版本会等到导入完成后再进行交换。我们所有的 solrconfig 设置都是相同的，所以我不确定是什么原因造成的。有什么想法或我缺少的东西吗？

Answer 1

找到罪魁祸首：

 229   <!-- The default high-performance update handler -->
 230   <updateHandler class="solr.DirectUpdateHandler2">
 231     <!-- AutoCommit
 232 
 233          Perform a hard commit automatically under certain conditions.
 234          Instead of enabling autoCommit, consider using "commitWithin"
 235          when adding documents.
 236 
 237          http://wiki.apache.org/solr/UpdateXmlMessages
 238 
 239          maxDocs - Maximum number of documents to add since the last
 240                    commit before automatically triggering a new commit.
 241 
 242          maxTime - Maximum amount of time in ms that is allowed to pass
 243                    since a document was added before automaticly
 244                    triggering a new commit.
 245          openSearcher - if false, the commit causes recent index changes
 246          to be flushed to stable storage, but does not cause a new
 247          searcher to be opened to make those changes visible.
 248       -->
 249      <autoCommit>
 250        <maxTime>15000</maxTime>
 251        <openSearcher>false</openSearcher>
 252      </autoCommit>
 253 
 254     <!-- softAutoCommit is like autoCommit except it causes a
 255          'soft' commit which only ensures that changes are visible
 256          but does not ensure that data is synced to disk.  This is
 257          faster and more near-realtime friendly than a hard commit.
 258       -->
 259 
 260     <autoSoftCommit>
 261       <maxTime>1000</maxTime>
 262     </autoSoftCommit>

注释掉了 autocommit 和 autosoftcommit 部分，索引不再增量更新。看来这是 solr 4 中添加的一个新参数。希望这对将来的其他人有所帮助。

编辑：这位于 SolrConfig/conf/solrconfig.xml 文件中。