IssueTracker

Component used: Paging + Room
Version used: 1.0.0-alpha4-1, 1.0.0
Devices/Android versions reproduced on:

I've gotten 5 crash reports (of many thousands of daily users) from my app on the screen that using Paging + Room to load a RecyclerView. Seems like a possible race condition.

Fatal Exception: java.lang.IllegalArgumentException
PositionalDataSource requires initial load size to be a multiple of page size to support internal tiling.
android.arch.paging.PositionalDataSource$LoadInitialCallback.onResult (PositionalDataSource.java:174)
android.arch.paging.TiledDataSource.loadInitial (TiledDataSource.java:64)
android.arch.paging.PositionalDataSource.dispatchLoadInitial (PositionalDataSource.java:267)
android.arch.paging.TiledPagedList.<init> (TiledPagedList.java:95)
android.arch.paging.PagedList.create (PagedList.java:181)
android.arch.paging.PagedList.access$000 (PagedList.java:97)
android.arch.paging.PagedList$Builder.build (PagedList.java:339)
android.arch.paging.LivePagedListBuilder$1.compute (LivePagedListBuilder.java:205)
android.arch.paging.LivePagedListBuilder$1.compute (LivePagedListBuilder.java:170)
android.arch.lifecycle.ComputableLiveData$2.run (ComputableLiveData.java:87)
java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1133)
java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:607)
java.lang.Thread.run (Thread.java:762)

Source code: https://github.com/romannurik/muzei/tree/v2.4.0-rc2
Specifically: https://github.com/romannurik/muzei/blob/v2.4.0-rc2/source-gallery/src/main/java/com/google/android/apps/muzei/gallery/GallerySettingsViewModel.java#L47