room-rxjava2 violates StrictMode [117201279]

Fixed

Bug

[AOSP] assigned

Status Update

No update yet.

Description

gm...@gmail.com

created issue #1

Oct 3, 2018 03:27PM

Component used: Room, room-rxjava2
Version used: 2.0.0
Devices/Android versions reproduced on:
Nexus 4 (Android 5.1.1)
Nexus 5 (Android 6.0.1)

Subscribing & unsubscribing causes StrictModeDiskReadViolation & StrictModeDiskWriteViolation.
This is very strange, given that "If you’re worried about threads, Room keeps you at ease and ensures that observable queries are done off the main thread." (from

https://medium.com/androiddevelopers/room-rxjava-acb0cd4f3757).

Sample project attached.

StrictRoom.zip

137 KB

Download

Comments

yb...@google.com <yb...@google.com> #2Oct 3, 2018 11:30PM

Status: Won't Fix (Intended Behavior)

Is there any updates? This is a big problem!

gm...@gmail.com <gm...@gmail.com> #3Oct 4, 2018 07:32AM

Hi there - could you provide more context on the issue & a sample project to reproduce? Database locked exceptions are quite difficult to pinpoint without a repro project. Thanks!

yb...@google.com <yb...@google.com> #4Oct 10, 2018 08:22PM

Status: Assigned (reopened)

Hi. It is reproduceable on some users by using this code:

suspend fun <R> MyDatabase.workaroundWithTransaction(block: suspend TransactionScope<R>.() -> R) {
    useWriterConnection {
        it.immediateTransaction(block)
    }

    // TODO: Temporally fix https://issuetracker.google.com/issues/340606803#comment2
    // Manually triggers invalidation
    invalidationTracker.refreshAsync()
}

yb...@google.com <yb...@google.com> #5Oct 11, 2018 12:41AM

Reassigned to da...@google.com.

Maybe it is about this? https://android-review.googlesource.com/c/platform/frameworks/support/+/3114928

I am not sure.

ap...@google.com <ap...@google.com> #6Oct 24, 2018 11:25PM

Hi. Please merge the pull request. This is big problem!

da...@google.com <da...@google.com> Oct 26, 2018 09:56PM

Marked as fixed.

wo...@gmail.com <wo...@gmail.com> #7Nov 8, 2018 06:38PM

Hi. Is there any updates on this problem?

ph...@gmail.com <ph...@gmail.com> #8Apr 4, 2019 04:29PM

Hi, I updated my version to alpha12 but still have these crashes. Please release a fix asap.

ph...@gmail.com <ph...@gmail.com> #9Apr 4, 2019 05:17PM

Will there be fixes released this Wednesday?

ph...@gmail.com <ph...@gmail.com> #10Apr 4, 2019 05:32PM

Hey, there is no release on Wednesday (holiday in the USA)

We haven't found the root cause of this exception, it happens when SQLite can't commit the transaction because some other connection has a lock, we need more information, a sample project that reproduces the issue preferably, or more details on how the database is being used (is it from multiple process? is there heavy concurrency?).

You can also increase the time SQLite will wait before it error with 'database locked' by executing PRAGMA busy_timeout = <time in ms>, the current default is 3000