Hello Denis, I found out that without persistence being enabled, no metadata is written on disk (where is an if clause at the start of every method of BinaryMetadataFileStore) and everything is stored in metadataLocalCache.
Semyon. 13.05.2020, 21:10, "Denis Mekhanikov" <dmekhani...@gmail.com>: > Sounds great! > > It happens pretty frequently that users migrate to a new version of > Ignite and preserve persistence files only without caring too much about > the work folder. But it turns out, that the work folder actually has > some important stuff. > This improvement should help with this issue. > > What's about in-memory mode? As far as I know, we write binary metadata > to disk even when no persistence is configured. Do you plan to address > it in any way? > > Denis > > On 12.05.2020 15:56, Sergey Antonov wrote: >> Hello Semyon, >> >> This is a good idea! >> >> вт, 12 мая 2020 г. в 15:53, Вячеслав Коптилин <slava.kopti...@gmail.com>: >> >>> Hello Semyon, >>> >>> This is a good and long-awaited improvement! Thank you for your efforts! >>> >>> Thanks, >>> S. >>> >>> вт, 12 мая 2020 г. в 15:11, Данилов Семён <samvi...@yandex.ru>: >>> >>>> Hello! >>>> >>>> I would like to propose moving /binary_meta and /marshaller folders to >>> the >>>> PDS folder. >>>> >>>> Motivation: data, directly related to the persistence, is stored outside >>>> the persistence dir, which can lead to various issues and also is not >>> very >>>> convenient to use. In particular, with k8s, deployment disk that is >>>> attached to a container can not be accessed from other containers or >>>> outside of k8s. In case if support will need to drop persistence except >>>> data, there will be no way to recover due to binary metadata is required >>> to >>>> process PDS files. >>>> >>>> I created an issue (https://issues.apache.org/jira/browse/IGNITE-12994) >>> and a >>>> pull request(https://github.com/apache/ignite/pull/7792) that fixes the >>>> issue. >>>> >>>> In that PR I made the following: >>>> >>>> * store binary meta and marshaller data inside db/ folder >>>> * if binary meta of marshaller are found in "legacy" locations -- >>>> safely move them to new locations during the node startup >>>> >>>> Kind regards, >>>> >>>> Semyon Danilov.
