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https://issues.apache.org/jira/browse/IGNITE-1526?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14936668#comment-14936668
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Vladimir Ozerov commented on IGNITE-1526:
-----------------------------------------
String.hashCode() is a very nice candidate for ID computation because it si
cached inside String string instance. Manual ID computation will lead to ~5-10%
slowdown, we already saw this in .Net where we have to calculate IDs by hand.
On the other hand, it is true that different JVMs might calculate it
differently, and some of them might even decide not to cache it. I would stick
with current implementation by default, and add ability to fallback to manual
ID calculation via system property.
> IBM JDK is not fully supported by the platfrom
> ----------------------------------------------
>
> Key: IGNITE-1526
> URL: https://issues.apache.org/jira/browse/IGNITE-1526
> Project: Ignite
> Issue Type: Bug
> Reporter: Denis Magda
> Assignee: Andrey Gura
> Priority: Blocker
> Fix For: ignite-1.5
>
>
> There are several issue related to IBM JDK.
> 1) It's not possible to compile the platform using IBM JDK ver 1.7;
> 2) Besides of the fact that two IBM nodes can connect to each other some
> functionality still doesn't work. As an example
> {{CacheClientPortablePutGetExample}} fails with the following stack trace
> {noformat}
> [14:38:56,930][ERROR][grid-nio-worker-0-#26%null%][TcpCommunicationSpi]
> Caught unhandled exception in NIO worker thread (restart the node).
> class org.apache.ignite.IgniteException: Invalid field type: 0
> at
> org.gridgain.grid.internal.communication.PortableDirectMessageReader.readRemovedField(PortableDirectMessageReader.java:670)
> at
> org.gridgain.grid.internal.communication.PortableDirectMessageReader.readFieldHeader(PortableDirectMessageReader.java:520)
> at
> org.gridgain.grid.internal.communication.PortableDirectMessageReader.readMessage(PortableDirectMessageReader.java:339)
> at
> org.apache.ignite.internal.managers.communication.GridIoMessage.readFrom(GridIoMessage.java:248)
> at
> org.apache.ignite.internal.util.nio.GridDirectParser.decode(GridDirectParser.java:76)
> at
> org.apache.ignite.internal.util.nio.GridNioCodecFilter.onMessageReceived(GridNioCodecFilter.java:103)
> at
> org.apache.ignite.internal.util.nio.GridNioFilterAdapter.proceedMessageReceived(GridNioFilterAdapter.java:107)
> at
> org.apache.ignite.internal.util.nio.GridConnectionBytesVerifyFilter.onMessageReceived(GridConnectionBytesVerifyFilter.java:122)
> at
> org.apache.ignite.internal.util.nio.GridNioFilterAdapter.proceedMessageReceived(GridNioFilterAdapter.java:107)
> at
> org.apache.ignite.internal.util.nio.GridNioServer$HeadFilter.onMessageReceived(GridNioServer.java:2078)
> at
> org.apache.ignite.internal.util.nio.GridNioFilterChain.onMessageReceived(GridNioFilterChain.java:172)
> at
> org.apache.ignite.internal.util.nio.GridNioServer$DirectNioClientWorker.processRead(GridNioServer.java:858)
> at
> org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.processSelectedKeys(GridNioServer.java:1397)
> at
> org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.bodyInternal(GridNioServer.java:1339)
> at
> org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.body(GridNioServer.java:1223)
> at
> org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:108)
> at java.lang.Thread.run(Thread.java:801)
> {noformat}
> 3) Oracle JVM based server node fails to connect to IBM server node producing
> the stack trace below. Tested with JDK and Portable marshallers.
> {noformat}
> [13:47:33,935][SEVERE][tcp-disco-msg-worker-#2%null][TcpDiscoverySpi] Failed
> to
> unmarshal discovery data for component: 0
> class org.apache.ignite.IgniteCheckedException: Failed to deserialize object
> wit
> h given class loader: sun.misc.Launcher$AppClassLoader@56092666
> at
> org.apache.ignite.marshaller.jdk.JdkMarshaller.unmarshal(JdkMarshalle
> r.java:105)
> at
> org.apache.ignite.marshaller.AbstractMarshaller.unmarshal(AbstractMar
> shaller.java:68)
> at
> org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi.onExchange(TcpDis
> coverySpi.java:1697)
> at
> org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.proc
> essNodeAddedMessage(ServerImpl.java:3258)
> at
> org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.proc
> essMessage(ServerImpl.java:1993)
> at
> org.apache.ignite.spi.discovery.tcp.ServerImpl$MessageWorkerAdapter.b
> ody(ServerImpl.java:5206)
> at org.apache.ignite.spi.IgniteSpiThread.run(IgniteSpiThread.java:62)
> Caused by: java.io.InvalidClassException:
> org.apache.ignite.internal.util.lang.G
> ridFunc$38; local class incompatible: stream classdesc serialVersionUID =
> -55433
> 49853748590486, local class serialVersionUID = -5664060422647374863
> at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:617)
> at
> java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:162
> 2)
> at
> java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
> 771)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
> at
> org.apache.ignite.internal.processors.continuous.GridContinuousProces
> sor$DiscoveryDataItem.readExternal(GridContinuousProcessor.java:1455)
> at
> java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:183
> 7)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
> 796)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
> at
> org.apache.ignite.internal.util.IgniteUtils.readList(IgniteUtils.java
> :5109)
> at
> org.apache.ignite.internal.util.IgniteUtils.readCollection(IgniteUtil
> s.java:1618)
> at
> org.apache.ignite.internal.processors.continuous.GridContinuousProces
> sor$DiscoveryData.readExternal(GridContinuousProcessor.java:1371)
> at
> java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:183
> 7)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1
> 796)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
> at
> org.apache.ignite.marshaller.jdk.JdkMarshaller.unmarshal(JdkMarshalle
> r.java:102)
> ... 6 more
> {noformat}
> 4) Oracle JVM based client node is partially connected to IBM server node.
> The server node updates its topology while the client is hanging with the
> stack trace below. Tested with JDK and Portable marshallers.:
> {noformat}
> "main" prio=6 tid=0x00000000001ee800 nid=0x1f44 waiting on condition
> [0x00000000025ce000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x00000007d7ad4478> (a
> java.util.concurrent.CountDownLatch$Sync)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:834)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:994)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1303)
> at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:236)
> at
> org.apache.ignite.spi.discovery.tcp.ClientImpl.spiStart(ClientImpl.java:252)
> at
> org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi.spiStart(TcpDiscoverySpi.java:1815)
> at
> org.apache.ignite.internal.managers.GridManagerAdapter.startSpi(GridManagerAdapter.java:252)
> at
> org.apache.ignite.internal.managers.discovery.GridDiscoveryManager.start(GridDiscoveryManager.java:666)
> at
> org.apache.ignite.internal.IgniteKernal.startManager(IgniteKernal.java:1485)
> at org.apache.ignite.internal.IgniteKernal.start(IgniteKernal.java:908)
> at
> org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.start0(IgnitionEx.java:1617)
> at
> org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.start(IgnitionEx.java:1484)
> - locked <0x00000007d7bbb918> (a
> org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance)
> at org.apache.ignite.internal.IgnitionEx.start0(IgnitionEx.java:965)
> at
> org.apache.ignite.internal.IgnitionEx.startConfigurations(IgnitionEx.java:892)
> at org.apache.ignite.internal.IgnitionEx.start(IgnitionEx.java:784)
> at org.apache.ignite.internal.IgnitionEx.start(IgnitionEx.java:705)
> at org.apache.ignite.internal.IgnitionEx.start(IgnitionEx.java:576)
> at org.apache.ignite.internal.IgnitionEx.start(IgnitionEx.java:546)
> at org.apache.ignite.Ignition.start(Ignition.java:346)
> {noformat}
> IBM SDK implements {{sun.misc.Unsafe}}. However there is no guarantee that it
> works the same way Oracle's does.
> In all the test the following JDK versions were used:
> 1) IBM
> java version "1.7.0"
> Java(TM) SE Runtime Environment (build pwa6470sr8fp10-20141219_01(SR8 FP10))
> IBM J9 VM (build 2.6, JRE 1.7.0 Windows 7 amd64-64 Compressed References
> 2014121
> 6_227497 (JIT enabled, AOT enabled)
> J9VM - R26_Java726_SR8_20141216_0955_B227497
> JIT - r11.b07_20141003_74578.05
> GC - R26_Java726_SR8_20141216_0955_B227497_CMPRSS
> J9CL - 20141216_227497)
> JCL - 20141217_01 based on Oracle jdk7u75-b12
> 2) Oracle
> java version "1.7.0_67"
> Java(TM) SE Runtime Environment (build 1.7.0_67-b01)
> Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)
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