Mailing-List: contact solr-user-help@lucene.apache.org; run by ezmlm
Precedence: bulk
Reply-To: solr-user@lucene.apache.org
MIME-Version: 1.0
In-Reply-To: <2b240226-e973-0db1-35e9-4bab648873bc@elyograg.org>
References: <CAMCstK5sDi6WetB_5_Gdwhbk2QNy3MYxATJwT4AqARxMOp63-w@mail.gmail.com>
 <2b240226-e973-0db1-35e9-4bab648873bc@elyograg.org>
From: Kent Mu <solr.study@gmail.com>
Date: Sat, 2 Jul 2016 16:26:41 +0800
Message-ID: <CAMCstK5eQ41VFv1-4-4sL+DpyNvbvnLKzSXy=tU_dPAZ91HggA@mail.gmail.com>
Subject: Re: solr shutdown error
To: solr-user@lucene.apache.org
Content-Type: multipart/alternative; boundary=001a114e23f4ddf9580536a2dc0d
archived-at: Sat, 02 Jul 2016 08:26:54 -0000

--001a114e23f4ddf9580536a2dc0d
Content-Type: text/plain; charset=UTF-8

Thanks for your reply!

I do understand your explaination, but another question accurs, When I
create CloudSolrServer Connection by singleton pattern like this, and I
call shutdown, but it's OK. the solr version is 4.9.0. that's why?

    public synchronized static CloudSolrServer getSolrCloudReadServer() {
        if (reviewSolrCloudServer == null) {
        ModifiableSolrParams params = new ModifiableSolrParams();
        params.set(HttpClientUtil.PROP_MAX_CONNECTIONS, 10000);
        params.set(HttpClientUtil.PROP_MAX_CONNECTIONS_PER_HOST, 500);
        HttpClient client = HttpClientUtil.createClient(params);
        LBHttpSolrServer lbServer = new LBHttpSolrServer(client);

lbServer.setConnectionTimeout(ReviewProperties.getCloudConnectionTimeOut());
        lbServer.setSoTimeout(ReviewProperties.getCloudSoTimeOut());

        reviewSolrCloudServer = new
CloudSolrServer(ReviewProperties.getZkHost(),lbServer);
        reviewSolrCloudServer.setDefaultCollection("commodityReview");

reviewSolrCloudServer.setZkClientTimeout(ReviewProperties.getZkClientTimeout());

reviewSolrCloudServer.setZkConnectTimeout(ReviewProperties.getZkConnectTimeout());
        reviewSolrCloudServer.connect();
        }
        return reviewSolrCloudServer;
    }


2016-07-02 14:22 GMT+08:00 Shawn Heisey <apache@elyograg.org>:

> On 7/1/2016 10:59 PM, Kent Mu wrote:
> > solr version: 4.9.0 I create and get a HttpSolrServer connection by
> > singleton pattern. I find the method of "shutdown" in solrj API, so I
> > decided to use "shutdown" to release resources, but I got the error as
> > below, It is due to singleton pattern?
>
> If you call shutdown, that client object can no longer be used.  You
> will need to make a new one.
>
> The expected usage pattern for the client object is that you will create
> one object when the program starts and use it for all threads until the
> program exits.  Whether or not to use the singleton pattern for that is
> up to you.  Usually the only time you would call shutdown is just before
> program exit ... but if the program is exiting, shutdown isn't really
> necessary.
>
> If you are in a situation where client objects are being regularly
> created, then you would want to do shutdown on each of them when you are
> finished so you don't have a resource leak.  Creating many client
> objects is not recommended.
>
> Thanks,
> Shawn
>
>

--001a114e23f4ddf9580536a2dc0d--