java.nio.BufferUnderflowException occurs when I run any mvnd command

[jcm007]

Hi Experts,

I get this error even when I run mvnd -v:

PS D:\_Projects\Java\xxx> mvnd -v
mvnd native client 0.7.1-windows-amd64 (97c587c11383a67b5bd0ff8388bd94c694b91c1e)
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:209)
        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)

When I run other commands, it will be like:

PS D:\_Projects\Java\xxx> mvnd clean install -DskipTests=true '-Dmaven.javadoc.skip=true' '-Dmaven.compile.fork=true' -T 0.8C
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:209)
        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)

Please help. Thanks in advance.

[garywhittington]

The same problem started for me today. I resolved it by removing the $HOME/.m2/mvnd directory, and then all seems to be working again (with mvnd then recreating this directory).

[gnodet]

Yes, the exception clearly indicates the registry has been corrupted. We should put some safeguard mechanism to handle this use case more gracefully. As indicated by @garywhittington, deleting the $HOME/.m2/mvnd should be a good workaround.

[gnodet]

Fixed with #614