Hi, Please check if making cache field final will help you. There could be a problem with inter-thread visibility. Try changing the field signature to "private *final* IgniteCache<String, InputFields> cache;"
Kind regards, Alex. On Thu, Jun 22, 2017 at 1:10 AM, mdolgonos [via Apache Ignite Users] < [email protected]> wrote: > I have the singleton service class that creates an Ignite cache and > provides a public method to add entries to the cache. Below is the code > that creates cache: > > @Service("cacheService") > @Scope(value = "singleton") > public class RentdCacheService { > private IgniteCache<String, InputFields> cache = null; > public RentdCacheService() { > super(); > createCache(); > } > > private void createCache() { > try { > Ignition.setClientMode(true); > Ignite ignite = Ignition.start("default-config.xml"); > > cache = ignite.getOrCreateCache("myCacheName"); > System.out.println("Created Ignite cache: " + > cache); > } catch (Exception ex) { > ex.printStackTrace(); > } > } > > //The following method adds to the cache: > > public void addRowToCache(String key, InputFields dataRow) { > System.out.println("adding key="+key + " and > dataRow="+dataRow); > System.out.println("cache: " + cache); > cache.put(key, dataRow); > } > } > > In the system output I can see that the cache was created ( or received > from the grid if created earlier). However, when the addRowToCache method > is called the cache is null. I'm using a slightly modified > default-config.xml where I added the grid name property and a discoverySpi > property. > can someone please help me understand why the cache gets dereferenced. > Thank you. > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > http://apache-ignite-users.70518.x6.nabble.com/Ignite- > cache-received-by-the-client-becomes-null-tp14036.html > To start a new topic under Apache Ignite Users, email > [email protected] > To unsubscribe from Apache Ignite Users, click here > <http://apache-ignite-users.70518.x6.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=1&code=YWxleGFuZGVyLmZlZG90b2ZmQGdtYWlsLmNvbXwxfC0xMzYxNTU0NTg=> > . > NAML > <http://apache-ignite-users.70518.x6.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > -- View this message in context: http://apache-ignite-users.70518.x6.nabble.com/Ignite-cache-received-by-the-client-becomes-null-tp14036p14042.html Sent from the Apache Ignite Users mailing list archive at Nabble.com.
