Unable to read from byte cache

[Kris]

Hi, I get this in dev mode en eclipse Juno, get 2.5.1

java.util.concurrent.ExecutionException: java.lang.RuntimeException: Unable to read from byte cache

at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252)

at java.util.concurrent.FutureTask.get(FutureTask.java:111)

at com.google.gwt.dev.javac.PersistentUnitCache.awaitUnitCacheMapLoad(PersistentUnitCache.java:466)

at com.google.gwt.dev.javac.PersistentUnitCache.find(PersistentUnitCache.java:391)

at com.google.gwt.dev.javac.CompilationStateBuilder.addArchive(CompilationStateBuilder.java:365)

at com.google.gwt.dev.ArchivePreloader.preloadArchives(ArchivePreloader.java:65)

at com.google.gwt.dev.DevModeBase$UiBrowserWidgetHostImpl.createModuleSpaceHost(DevModeBase.java:106)

at com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:197)

at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:526)

at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)

at java.lang.Thread.run(Thread.java:722)

Caused by: java.lang.RuntimeException: Unable to read from byte cache

at com.google.gwt.dev.util.DiskCache.transferFromStream(DiskCache.java:171)

at com.google.gwt.dev.util.DiskCacheToken.readObject(DiskCacheToken.java:87)

at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004)

at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1872)

at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1777)

at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)

at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1970)

at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1894)

at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1777)

at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)

at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)

at java.util.ArrayList.readObject(ArrayList.java:733)

at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004)

at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1872)

at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1777)

at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)

at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)

at com.google.gwt.dev.javac.CachedCompilationUnit.readObject(CachedCompilationUnit.java:205)

at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:601)

at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004)

at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1872)

at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1777)

at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)

at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)

at com.google.gwt.dev.javac.PersistentUnitCache.loadUnitMap(PersistentUnitCache.java:517)

at com.google.gwt.dev.javac.PersistentUnitCache.access$800(PersistentUnitCache.java:96)

at com.google.gwt.dev.javac.PersistentUnitCache$4.run(PersistentUnitCache.java:222)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)

at java.util.concurrent.FutureTask.run(FutureTask.java:166)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

... 1 more

Caused by: java.io.StreamCorruptedException: unexpected EOF in middle of data block

at java.io.ObjectInputStream$BlockDataInputStream.refill(ObjectInputStream.java:2518)

at java.io.ObjectInputStream$BlockDataInputStream.read(ObjectInputStream.java:2681)

at java.io.ObjectInputStream.read(ObjectInputStream.java:862)

at java.io.InputStream.read(InputStream.java:101)

at com.google.gwt.dev.util.DiskCache.transferFromStream(DiskCache.java:159)

I did delete the unit cache, recompile... etc. 

[Sumit Shingavi]

Hello Kris,

I am facing same problem. Can you please help with what was the solution for this issue?

Thanks,

Sumit

[jonl]

I see this issue when something modifies the gwt-unitCache while run time.

This could include:

Manually running GWT compile while running in "hosted" mode.
Modifying a file during debug that is compiled to JS while runtime is paused using a break point.

Juno and GWT really sucked. Indigo and Kepler are both better options, imo