client.solrj">SolrServerException</a></pre>
<div class="block">Performs a rollback of all non-committed documents pending.
 <p>
 Note that this is not a true rollback as in databases. Content you have
 previously added may have already been committed due to autoCommit, buffer
 full, other client performing a commit etc. So this is only a best-effort
 rollback.</div>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://download.oracle.com/javase/7/docs/api/java/io/IOException.html?is-ex