On 6-Aug-07, at 5:38 AM, Erik Hatcher wrote:
I'm working on a project that embeds Solr, much like the
EmbeddedSolr example posted here <http://wiki.apache.org/solr/
EmbeddedSolr>.
The application generally runs fine, with very rapid handling of
indexing and search requests, however at heavy load we're
experiencing "Lock obtain timed out: SimpleFSLock@ ..." errors.
The heavy load can be replicated by indexing the same document
repeatedly, so even a very tiny index experiences this. The
application is configured with the following relevant pieces to
solrconfig.xml:
<indexDefaults>
<!-- Values here affect all index writers and act as a default
unless overridden. -->
<useCompoundFile>false</useCompoundFile>
<mergeFactor>10</mergeFactor>
<maxBufferedDocs>1000</maxBufferedDocs>
<maxMergeDocs>2147483647</maxMergeDocs>
<maxFieldLength>10000</maxFieldLength>
<writeLockTimeout>1000</writeLockTimeout>
Have you tried upping this? The problem might be that you are
commiting every 1.0s, and a single commit eventually might take
longer than this (and you're only waiting 1.0s to acquire the write
lock).
-Mike
<commitLockTimeout>10000</commitLockTimeout>
</indexDefaults>
and
<autoCommit>
<maxTime>1000</maxTime>
</autoCommit>
So a commit is never sent, only relying on the autoCommit feature.
What troubleshooting/diagnostic steps do you recommend to dig
further into this?
At the moment the application is intertwined with domain-specific
stuff, so I haven't isolated it to a simple sharable situation yet,
but I'll do that if necessary.
Thanks,
Erik
