solr4 - SOLR autoCommit vs autoSoftCommit -

i'm confused , . here understand

• autosoftcommit - after autosoftcommit, if the solr server goes down, autosoftcommit documents lost.

• autocommit - hard commit disk , make sure autosoftcommit commits written disk , commits other document.

my following configuration seems with autosoftcommit. autocommit on own not seems doing commits. there missing ?

<updatehandler class="solr.directupdatehandler2">     <updatelog>         <str name="dir">${solr.ulog.dir:}</str>     </updatelog>    <autosoftcommit>         <maxdocs>1000</maxdocs>         <maxtime>1200000</maxtime>     </autosoftcommit>     <autocommit>         <maxdocs>10000</maxdocs>         <maxtime>120000</maxtime>          <opensearcher>false</opensearcher>     </autocommit> </updatehandler> 

why autocommit working on it's own ?

you have opensearcher=false hard commits. means though commit happened, searcher has not been restarted , cannot see changes. try changing setting , not need soft commit.

softcommit reopen searcher. if have both sections, soft commit shows new changes (even if not hard-committed) , - configured - hard commit saves them disk, not change visibility.

this allows put soft commit 1 second , have documents show , have hard commit happen less frequently.