[Zen2] Change MetaDataStateFormat write semantics#34709

Merged

andrershov merged 6 commits intoelastic:zen2from andrershov:zen2_write_semantics

Oct 24, 2018

+156-43

Commits on Oct 22, 2018

Fix test failure. Convert IllegalStateException to IOException
Andrey Ershov
committed
Change meta data write failure semantics
Andrey Ershov
committed

Commits on Oct 23, 2018

WriteStateException extends IOException
Andrey Ershov
committed
Fix David's code review comments
Andrey Ershov
committed
Open all directories as the first algorithm step
Andrey Ershov
committed
Inline performDirectoryCleanup
Andrey Ershov
committed