Extension Sometimes Gets Into Bad State When Reloading VSCode #141
Description
Hello, thanks for working on this extension.
Using VSCode, sometimes one needs to use the Developer: Reload Window command to get the LSP to pick up certain changes (e.g. when a class or interface is deleted, or when something is renamed). That's no big deal, but it seems that lately, when I do this, the LSP gets into a bad state and can't restart. The only fix is to restart my computer (even totally quitting VSCode doesn't solve).
Sample of error logs below (they are voluminous, but I think this is the core part and it just gets repeated incessantly). Please let me know if you need additional info.
2026-01-20 07:59:46,580 [ 1602] INFO - #c.j.l.s.a.i.c.LSServerAnalyzerImplKt - Indices storage path: /Users/samiersaeed/Library/Application Support/JetBrains/analyzer/workspaces/3b2ca750c83df3ff6fc37ef8a209cbfe.mv.db
2026-01-20 07:59:46,620 [ 32] SEVERE - #c.j.l.s.a.i.c.MVSKt - Error opening MVStore /Users/samiersaeed/Library/Application Support/JetBrains/analyzer/workspaces/3b2ca750c83df3ff6fc37ef8a209cbfe.mv.db
The file is locked: /Users/samiersaeed/Library/Application Support/JetBrains/analyzer/workspaces/3b2ca750c83df3ff6fc37ef8a209cbfe.mv.db [2.3.232/7]
org.h2.mvstore.MVStoreException: The file is locked: /Users/samiersaeed/Library/Application Support/JetBrains/analyzer/workspaces/3b2ca750c83df3ff6fc37ef8a209cbfe.mv.db [2.3.232/7]
at org.h2.mvstore.DataUtils.newMVStoreException(DataUtils.java:996)
at org.h2.mvstore.SingleFileStore.lockFileChannel(SingleFileStore.java:143)
at org.h2.mvstore.SingleFileStore.open(SingleFileStore.java:117)
at org.h2.mvstore.SingleFileStore.open(SingleFileStore.java:81)
at org.h2.mvstore.MVStore.<init>(MVStore.java:286)
at org.h2.mvstore.MVStore$Builder.open(MVStore.java:2035)
at com.jetbrains.ls.snapshot.api.impl.core.MVSKt.tryOpenStore(MVS.kt:93)
at com.jetbrains.ls.snapshot.api.impl.core.MVSKt.createDB(MVS.kt:39)
at com.jetbrains.ls.snapshot.api.impl.core.LSServerAnalyzerImplKt$createServerStarterAnalyzerImpl$1$start$2$serverContext$1$withServer$2$1$2$3$1.invokeSuspend(LSServerAnalyzerImpl.kt:133)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:34)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:100)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:610)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runDefaultDispatcherTask(CoroutineScheduler.kt:1194)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:906)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:775)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:762)
[Error - 7:59:46 AM] Server initialization failed.
Message: cancelled
Code: -32800
[Error - 7:59:46 AM] Kotlin LSP client: couldn't create connection to server.
Message: cancelled
Code: -32800
[Error - 7:59:46 AM] Restarting server failed
Message: cancelled
Code: -32800
2026-01-20 07:59:46,668 [ 1046] INFO - #fleet.kernel.Transactor - shutting down kernel Kernel@pfp1fucgis0f4af9jqm0
2026-01-20 07:59:46,676 [ 1220] INFO - #c.j.l.i.LspClient - Client disconnected from the server
[Error - 7:59:46 AM] The Kotlin LSP server crashed 5 times in the last 3 minutes. The server will not be restarted. See the output for more information.
2026-01-20 07:59:46,682 [ 1226] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 2s... (error: Multiple editing sessions for one workspace are not supported yet)
2026-01-20 07:59:47,249 [ 7082] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 8s... (error: Connection refused)
2026-01-20 07:59:48,484 [ 2043] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 4s... (error: Connection refused)
2026-01-20 07:59:48,689 [ 3233] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 4s... (error: Connection refused)
2026-01-20 07:59:49,825 [ 7050] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 8s... (error: Connection refused)
2026-01-20 07:59:52,493 [ 6052] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 8s... (error: Connection refused)
2026-01-20 07:59:52,695 [ 7239] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 8s... (error: Connection refused)
2026-01-20 07:59:52,781 [ 15379] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 15s... (error: Connection refused)
2026-01-20 07:59:55,260 [ 15093] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 15s... (error: Connection refused)
2026-01-20 07:59:57,834 [ 15059] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 15s... (error: Connection refused)
2026-01-20 08:00:00,499 [ 14058] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 15s... (error: Connection refused)
2026-01-20 08:00:00,702 [ 15246] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 15s... (error: Connection refused)
2026-01-20 08:00:07,786 [ 30384] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 15s... (error: Connection refused)
Exception in thread "main" java.net.ConnectException: Connection refused
at java.base/sun.nio.ch.Net.pollConnect(Native Method)
at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:682)
at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:973)
at io.ktor.network.sockets.SocketImpl.connect$ktor_network(SocketImpl.kt:50)
at io.ktor.network.sockets.SocketImpl$connect$1.invokeSuspend(SocketImpl.kt)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:34)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:100)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:610)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runDefaultDispatcherTask(CoroutineScheduler.kt:1194)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:906)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:775)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:762)
2026-01-20 08:00:10,270 [ 30103] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 15s... (error: Connection refused)
Exception in thread "main" java.net.ConnectException: Connection refused
at java.base/sun.nio.ch.Net.pollConnect(Native Method)
at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:682)
at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:973)
at io.ktor.network.sockets.SocketImpl.connect$ktor_network(SocketImpl.kt:50)
at io.ktor.network.sockets.SocketImpl$connect$1.invokeSuspend(SocketImpl.kt)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:34)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:100)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:610)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runDefaultDispatcherTask(CoroutineScheduler.kt:1194)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:906)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:775)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:762)
2026-01-20 08:00:12,839 [ 30064] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 15s... (error: Connection refused)
Exception in thread "main" java.net.ConnectException: Connection refused
at java.base/sun.nio.ch.Net.pollConnect(Native Method)
at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:682)
at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:973)
at io.ktor.network.sockets.SocketImpl.connect$ktor_network(SocketImpl.kt:50)
at io.ktor.network.sockets.SocketImpl$connect$1.invokeSuspend(SocketImpl.kt)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:34)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:100)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:610)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runDefaultDispatcherTask(CoroutineScheduler.kt:1194)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:906)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:775)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:762)
2026-01-20 08:00:15,507 [ 29066] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 15s... (error: Connection refused)
2026-01-20 08:00:15,717 [ 30261] WARNING - #c.j.l.i.LspClient - Retrying 127.0.0.1:9998 in 15s... (error: Connection refused)
Exception in thread "main" java.net.ConnectException: Connection refused
at java.base/sun.nio.ch.Net.pollConnect(Native Method)
at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:682)