[ https://issues.apache.org/jira/browse/IGNITE-1903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Denis Magda updated IGNITE-1903: -------------------------------- Fix Version/s: (was: 1.6) 1.7 > CacheStore implementation is serialised to grid clients whether they require > it or not > -------------------------------------------------------------------------------------- > > Key: IGNITE-1903 > URL: https://issues.apache.org/jira/browse/IGNITE-1903 > Project: Ignite > Issue Type: Bug > Affects Versions: 1.5.0.final > Reporter: Michael Griggs > Assignee: Denis Magda > Priority: Critical > Labels: community > Fix For: 1.7 > > > See User discussion thread: > http://apache-ignite-users.70518.x6.nabble.com/CacheStore-being-serialized-to-client-td1931.html > Brief summary: When a grid client joins the grid (clientMode=true) it > receives a message from the server node(s) on the grid that contains the > serialized CacheStore implementation object. If the client does not have > this class on its CLASSPATH (and there is no reason it should, as it is a > client) then the de-serialization of this message will fail, causing this > exception: > {code}SEVERE: Failed to unmarshal discovery data for component: 1 > class org.apache.ignite.IgniteCheckedException: Failed to find class with > given class loader for unmarshalling (make sure same versions of all classes > are available on all nodes or enable peer-class-loading): > sun.misc.Launcher$AppClassLoader@14dad5dc > at > org.apache.ignite.marshaller.jdk.JdkMarshaller.unmarshal(JdkMarshaller.java:104) > > at > org.apache.ignite.marshaller.AbstractMarshaller.unmarshal(AbstractMarshaller.java:67) > > at > org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi.onExchange(TcpDiscoverySpi.java:1529) > > at > org.apache.ignite.spi.discovery.tcp.ClientImpl$MessageWorker.processNodeAddFinishedMessage(ClientImpl.java:1317) > > at > org.apache.ignite.spi.discovery.tcp.ClientImpl$MessageWorker.processDiscoveryMessage(ClientImpl.java:1229) > > at > org.apache.ignite.spi.discovery.tcp.ClientImpl$MessageWorker.body(ClientImpl.java:1199) > > at org.apache.ignite.spi.IgniteSpiThread.run(IgniteSpiThread.java:62) > Caused by: java.lang.ClassNotFoundException: > c.g.r.cachewrapper.ignite.CacheMissHandlerIgnite > {code} > where {{c.g.r.cachewrapper.ignite.CacheMissHandlerIgnite}} is the CacheStore > implementation. > The ostensible reason for the CacheStore serialization is so that clients of > a TRANSACTIONAL cache can begin the transaction on the underlying store. > The only current solution to this is to add the grid node's CacheStore > implementation class definition to the CLASSPATH of the client. This creates > an *undesirable coupling* between server and client. -- This message was sent by Atlassian JIRA (v6.3.4#6332)