Daemon suddenly stopped working - BufferUnderflowException

[eforx]

After few weeks of using this excellent utility, it suddenly stopped working. Reinstallation did not help.

$ java -version
java version "1.8.0_311"
Java(TM) SE Runtime Environment (build 1.8.0_311-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.311-b11, mixed mode)

$ mvnd --version
mvnd native client 0.7.1-windows-amd64 (97c587c)
Terminal: org.jline.terminal.impl.jansi.win.JansiWinSysTerminal

Exception in thread "main" java.nio.BufferUnderflowException
        at java.nio.ByteBuffer.get(ByteBuffer.java:798)
        at java.nio.ByteBuffer.get(ByteBuffer.java:826)
        at org.mvndaemon.mvnd.common.DaemonRegistry.readString(DaemonRegistry.java:303)
        at org.mvndaemon.mvnd.common.DaemonRegistry.doUpdate(DaemonRegistry.java:213)
        at org.mvndaemon.mvnd.common.DaemonRegistry.read(DaemonRegistry.java:164)
        at org.mvndaemon.mvnd.common.DaemonRegistry.getAll(DaemonRegistry.java:102)
        at org.mvndaemon.mvnd.client.DaemonConnector.connect(DaemonConnector.java:101)
        at org.mvndaemon.mvnd.client.DefaultClient.execute(DefaultClient.java:272)
        at org.mvndaemon.mvnd.client.DefaultClient.main(DefaultClient.java:118)

[gnodet]

The registry may have been corrupted somehow. Could you try deleting the ~/.m2/mvnd/registry directory and try again ?

[eforx]

Seems it helps. Thank you very much! Are you interested about corrupted registry.bin file for future investigation?

[gnodet]

Sure, please attach it to this issue, I'll try to have a look.

[gnodet]

@eforx also, you should have seen the warning printed at

maven-mvnd/common/src/main/java/org/mvndaemon/mvnd/common/DaemonRegistry.java

Lines 252 to 255 in 4cea5d3

	LOGGER.warn("Invalid daemon registry info, " +
	"trying to recover from this issue. " +
	"If you keep getting this warning, " +
	"try deleting the `registry.bin` file at [" + absPath + "]", e);

. Isn't that the case ? it should have hinted you at deleting the registry file.

[eforx]

The log does not contain mentioned phrase (I attached last log from yesterday also). It also looks like, the daemon stopped creating logs after computer restart (after registry corruption) - no more logs from today, till I removed ~/.m2/mvnd/registry directory.

daemon-239b49e8.log
registry_corrupted.zip

[tedchang77]

we've seen similar errors. has this been fixed and when will 0.8.1 be released?

[gnodet]

Fixed by e51416f