Re: Defrag?
A rebuild of the cash reduced the size of the data dramatically. Apparently ignite is not doing anything to rebalance or clean up pages. I can't see how anyone using ignite native seriously will not have this problem. I wonder if this impacts the indexing also? And could be part of the lousy performance we are having with ignite native. On Wed, Jun 30, 2021, 8:27 AM Ryan Trollip wrote: > Hey Ilya > > It's the data tables that keep growing not the WAL. > We will try to rebuild the cache and see if that fixes the issue > > On Mon, Jun 28, 2021 at 8:46 AM Ilya Kasnacheev > wrote: > >> Hello! >> >> Is it WAL (wal/) that is growing or checkpoint space (db/)? If latter, >> any specific caches that are growing unbound? >> >> If letter, you can try creating a new cache, moving the relevant data to >> this new cache, switch to using it, and then drop the old cache - should >> reclaim the space. >> >> Regards, >> -- >> Ilya Kasnacheev >> >> >> пн, 28 июн. 2021 г. в 17:34, Ryan Trollip : >> >>> Is this why the native disk storage just keeps growing and does not >>> reduce after we delete from ignite using SQL? >>> We are up to 80GB on disk now on some instances. We implemented a custom >>> archiving feature to move older data out of ignite cache to a PostgresSQL >>> database but when we delete that data from ignite instance, the disk data >>> size ignite is using stays the same, and then keeps growing, and >>> growing >>> >>> On Thu, Jun 24, 2021 at 7:10 PM Denis Magda wrote: >>> Ignite fellows, I remember some of us worked on the persistence defragmentation features. Has it been merged? @Valentin Kulichenko probably you know the latest state. - Denis On Thu, Jun 24, 2021 at 11:59 AM Ilya Kasnacheev < ilya.kasnach...@gmail.com> wrote: > Hello! > > You can probably drop the entire cache and then re-populate it via > loadCache(), etc. > > Regards, > -- > Ilya Kasnacheev > > > ср, 23 июн. 2021 г. в 21:47, Ryan Trollip : > >> Thanks, Ilya, we may have to consider moving back to non-native >> storage and caching more selectively as the performance degrades when >> there >> is a lot of write/delete activity or tables with large amounts of rows. >> This is with SQL with indexes and the use of query plans etc. >> >> Is there any easy way to rebuild the entire native database after >> hours? e.g. with a batch run on the weeknds? >> >> On Wed, Jun 23, 2021 at 7:39 AM Ilya Kasnacheev < >> ilya.kasnach...@gmail.com> wrote: >> >>> Hello! >>> >>> I don't think there's anything ready to use, but "killing >>> performance" from fragmentation is also not something reported too >>> often. >>> >>> Regards, >>> -- >>> Ilya Kasnacheev >>> >>> >>> ср, 16 июн. 2021 г. в 04:39, Ryan Trollip >> >: >>> We see continual very large growth to data with ignite native. We have a very chatty use case that's creating and deleting stuff often. The data on disk just keeps growing at an explosive rate. So much so we ported this to a DB to see the difference and the DB is much smaller. I was searching to see if someone has the same issue. This is also killing performance. Founds this: https://cwiki.apache.org/confluence/display/IGNITE/IEP-47%3A+Native+persistence+defragmentation Apparently, there is no auto-rebalancing of pages? or cleanup of pages? Has anyone implemented a workaround to rebuild the cache and indexes say on a weekly basis to get it to behave reasonably? Thanks >>>
Re: Defrag?
Hey Ilya It's the data tables that keep growing not the WAL. We will try to rebuild the cache and see if that fixes the issue On Mon, Jun 28, 2021 at 8:46 AM Ilya Kasnacheev wrote: > Hello! > > Is it WAL (wal/) that is growing or checkpoint space (db/)? If latter, any > specific caches that are growing unbound? > > If letter, you can try creating a new cache, moving the relevant data to > this new cache, switch to using it, and then drop the old cache - should > reclaim the space. > > Regards, > -- > Ilya Kasnacheev > > > пн, 28 июн. 2021 г. в 17:34, Ryan Trollip : > >> Is this why the native disk storage just keeps growing and does not >> reduce after we delete from ignite using SQL? >> We are up to 80GB on disk now on some instances. We implemented a custom >> archiving feature to move older data out of ignite cache to a PostgresSQL >> database but when we delete that data from ignite instance, the disk data >> size ignite is using stays the same, and then keeps growing, and >> growing >> >> On Thu, Jun 24, 2021 at 7:10 PM Denis Magda wrote: >> >>> Ignite fellows, >>> >>> I remember some of us worked on the persistence defragmentation >>> features. Has it been merged? >>> >>> @Valentin Kulichenko probably you know >>> the latest state. >>> >>> - >>> Denis >>> >>> On Thu, Jun 24, 2021 at 11:59 AM Ilya Kasnacheev < >>> ilya.kasnach...@gmail.com> wrote: >>> Hello! You can probably drop the entire cache and then re-populate it via loadCache(), etc. Regards, -- Ilya Kasnacheev ср, 23 июн. 2021 г. в 21:47, Ryan Trollip : > Thanks, Ilya, we may have to consider moving back to non-native > storage and caching more selectively as the performance degrades when > there > is a lot of write/delete activity or tables with large amounts of rows. > This is with SQL with indexes and the use of query plans etc. > > Is there any easy way to rebuild the entire native database after > hours? e.g. with a batch run on the weeknds? > > On Wed, Jun 23, 2021 at 7:39 AM Ilya Kasnacheev < > ilya.kasnach...@gmail.com> wrote: > >> Hello! >> >> I don't think there's anything ready to use, but "killing >> performance" from fragmentation is also not something reported too often. >> >> Regards, >> -- >> Ilya Kasnacheev >> >> >> ср, 16 июн. 2021 г. в 04:39, Ryan Trollip : >> >>> We see continual very large growth to data with ignite native. We >>> have a very chatty use case that's creating and deleting stuff often. >>> The >>> data on disk just keeps growing at an explosive rate. So much so we >>> ported >>> this to a DB to see the difference and the DB is much smaller. I was >>> searching to see if someone has the same issue. This is also killing >>> performance. >>> >>> Founds this: >>> >>> https://cwiki.apache.org/confluence/display/IGNITE/IEP-47%3A+Native+persistence+defragmentation >>> >>> Apparently, there is no auto-rebalancing of pages? or cleanup of >>> pages? >>> >>> Has anyone implemented a workaround to rebuild the cache and indexes >>> say on a weekly basis to get it to behave reasonably? >>> >>> Thanks >>> >>
Re: Defrag?
Hello! Is it WAL (wal/) that is growing or checkpoint space (db/)? If latter, any specific caches that are growing unbound? If letter, you can try creating a new cache, moving the relevant data to this new cache, switch to using it, and then drop the old cache - should reclaim the space. Regards, -- Ilya Kasnacheev пн, 28 июн. 2021 г. в 17:34, Ryan Trollip : > Is this why the native disk storage just keeps growing and does not reduce > after we delete from ignite using SQL? > We are up to 80GB on disk now on some instances. We implemented a custom > archiving feature to move older data out of ignite cache to a PostgresSQL > database but when we delete that data from ignite instance, the disk data > size ignite is using stays the same, and then keeps growing, and > growing > > On Thu, Jun 24, 2021 at 7:10 PM Denis Magda wrote: > >> Ignite fellows, >> >> I remember some of us worked on the persistence defragmentation features. >> Has it been merged? >> >> @Valentin Kulichenko probably you know >> the latest state. >> >> - >> Denis >> >> On Thu, Jun 24, 2021 at 11:59 AM Ilya Kasnacheev < >> ilya.kasnach...@gmail.com> wrote: >> >>> Hello! >>> >>> You can probably drop the entire cache and then re-populate it via >>> loadCache(), etc. >>> >>> Regards, >>> -- >>> Ilya Kasnacheev >>> >>> >>> ср, 23 июн. 2021 г. в 21:47, Ryan Trollip : >>> Thanks, Ilya, we may have to consider moving back to non-native storage and caching more selectively as the performance degrades when there is a lot of write/delete activity or tables with large amounts of rows. This is with SQL with indexes and the use of query plans etc. Is there any easy way to rebuild the entire native database after hours? e.g. with a batch run on the weeknds? On Wed, Jun 23, 2021 at 7:39 AM Ilya Kasnacheev < ilya.kasnach...@gmail.com> wrote: > Hello! > > I don't think there's anything ready to use, but "killing performance" > from fragmentation is also not something reported too often. > > Regards, > -- > Ilya Kasnacheev > > > ср, 16 июн. 2021 г. в 04:39, Ryan Trollip : > >> We see continual very large growth to data with ignite native. We >> have a very chatty use case that's creating and deleting stuff often. The >> data on disk just keeps growing at an explosive rate. So much so we >> ported >> this to a DB to see the difference and the DB is much smaller. I was >> searching to see if someone has the same issue. This is also killing >> performance. >> >> Founds this: >> >> https://cwiki.apache.org/confluence/display/IGNITE/IEP-47%3A+Native+persistence+defragmentation >> >> Apparently, there is no auto-rebalancing of pages? or cleanup of >> pages? >> >> Has anyone implemented a workaround to rebuild the cache and indexes >> say on a weekly basis to get it to behave reasonably? >> >> Thanks >> >
Re: Defrag?
Is this why the native disk storage just keeps growing and does not reduce after we delete from ignite using SQL? We are up to 80GB on disk now on some instances. We implemented a custom archiving feature to move older data out of ignite cache to a PostgresSQL database but when we delete that data from ignite instance, the disk data size ignite is using stays the same, and then keeps growing, and growing On Thu, Jun 24, 2021 at 7:10 PM Denis Magda wrote: > Ignite fellows, > > I remember some of us worked on the persistence defragmentation features. > Has it been merged? > > @Valentin Kulichenko probably you know > the latest state. > > - > Denis > > On Thu, Jun 24, 2021 at 11:59 AM Ilya Kasnacheev < > ilya.kasnach...@gmail.com> wrote: > >> Hello! >> >> You can probably drop the entire cache and then re-populate it via >> loadCache(), etc. >> >> Regards, >> -- >> Ilya Kasnacheev >> >> >> ср, 23 июн. 2021 г. в 21:47, Ryan Trollip : >> >>> Thanks, Ilya, we may have to consider moving back to non-native storage >>> and caching more selectively as the performance degrades when there is a >>> lot of write/delete activity or tables with large amounts of rows. This is >>> with SQL with indexes and the use of query plans etc. >>> >>> Is there any easy way to rebuild the entire native database after hours? >>> e.g. with a batch run on the weeknds? >>> >>> On Wed, Jun 23, 2021 at 7:39 AM Ilya Kasnacheev < >>> ilya.kasnach...@gmail.com> wrote: >>> Hello! I don't think there's anything ready to use, but "killing performance" from fragmentation is also not something reported too often. Regards, -- Ilya Kasnacheev ср, 16 июн. 2021 г. в 04:39, Ryan Trollip : > We see continual very large growth to data with ignite native. We have > a very chatty use case that's creating and deleting stuff often. The data > on disk just keeps growing at an explosive rate. So much so we ported this > to a DB to see the difference and the DB is much smaller. I was searching > to see if someone has the same issue. This is also killing performance. > > Founds this: > > https://cwiki.apache.org/confluence/display/IGNITE/IEP-47%3A+Native+persistence+defragmentation > > Apparently, there is no auto-rebalancing of pages? or cleanup of > pages? > > Has anyone implemented a workaround to rebuild the cache and indexes > say on a weekly basis to get it to behave reasonably? > > Thanks >
Re: Defrag?
Ignite fellows, I remember some of us worked on the persistence defragmentation features. Has it been merged? @Valentin Kulichenko probably you know the latest state. - Denis On Thu, Jun 24, 2021 at 11:59 AM Ilya Kasnacheev wrote: > Hello! > > You can probably drop the entire cache and then re-populate it via > loadCache(), etc. > > Regards, > -- > Ilya Kasnacheev > > > ср, 23 июн. 2021 г. в 21:47, Ryan Trollip : > >> Thanks, Ilya, we may have to consider moving back to non-native storage >> and caching more selectively as the performance degrades when there is a >> lot of write/delete activity or tables with large amounts of rows. This is >> with SQL with indexes and the use of query plans etc. >> >> Is there any easy way to rebuild the entire native database after hours? >> e.g. with a batch run on the weeknds? >> >> On Wed, Jun 23, 2021 at 7:39 AM Ilya Kasnacheev < >> ilya.kasnach...@gmail.com> wrote: >> >>> Hello! >>> >>> I don't think there's anything ready to use, but "killing performance" >>> from fragmentation is also not something reported too often. >>> >>> Regards, >>> -- >>> Ilya Kasnacheev >>> >>> >>> ср, 16 июн. 2021 г. в 04:39, Ryan Trollip : >>> We see continual very large growth to data with ignite native. We have a very chatty use case that's creating and deleting stuff often. The data on disk just keeps growing at an explosive rate. So much so we ported this to a DB to see the difference and the DB is much smaller. I was searching to see if someone has the same issue. This is also killing performance. Founds this: https://cwiki.apache.org/confluence/display/IGNITE/IEP-47%3A+Native+persistence+defragmentation Apparently, there is no auto-rebalancing of pages? or cleanup of pages? Has anyone implemented a workaround to rebuild the cache and indexes say on a weekly basis to get it to behave reasonably? Thanks >>>
Re: Defrag?
Hello! You can probably drop the entire cache and then re-populate it via loadCache(), etc. Regards, -- Ilya Kasnacheev ср, 23 июн. 2021 г. в 21:47, Ryan Trollip : > Thanks, Ilya, we may have to consider moving back to non-native storage > and caching more selectively as the performance degrades when there is a > lot of write/delete activity or tables with large amounts of rows. This is > with SQL with indexes and the use of query plans etc. > > Is there any easy way to rebuild the entire native database after hours? > e.g. with a batch run on the weeknds? > > On Wed, Jun 23, 2021 at 7:39 AM Ilya Kasnacheev > wrote: > >> Hello! >> >> I don't think there's anything ready to use, but "killing performance" >> from fragmentation is also not something reported too often. >> >> Regards, >> -- >> Ilya Kasnacheev >> >> >> ср, 16 июн. 2021 г. в 04:39, Ryan Trollip : >> >>> We see continual very large growth to data with ignite native. We have a >>> very chatty use case that's creating and deleting stuff often. The data on >>> disk just keeps growing at an explosive rate. So much so we ported this to >>> a DB to see the difference and the DB is much smaller. I was searching to >>> see if someone has the same issue. This is also killing performance. >>> >>> Founds this: >>> >>> https://cwiki.apache.org/confluence/display/IGNITE/IEP-47%3A+Native+persistence+defragmentation >>> >>> Apparently, there is no auto-rebalancing of pages? or cleanup of pages? >>> >>> Has anyone implemented a workaround to rebuild the cache and indexes say >>> on a weekly basis to get it to behave reasonably? >>> >>> Thanks >>> >>
Re: Defrag?
Thanks, Ilya, we may have to consider moving back to non-native storage and caching more selectively as the performance degrades when there is a lot of write/delete activity or tables with large amounts of rows. This is with SQL with indexes and the use of query plans etc. Is there any easy way to rebuild the entire native database after hours? e.g. with a batch run on the weeknds? On Wed, Jun 23, 2021 at 7:39 AM Ilya Kasnacheev wrote: > Hello! > > I don't think there's anything ready to use, but "killing performance" > from fragmentation is also not something reported too often. > > Regards, > -- > Ilya Kasnacheev > > > ср, 16 июн. 2021 г. в 04:39, Ryan Trollip : > >> We see continual very large growth to data with ignite native. We have a >> very chatty use case that's creating and deleting stuff often. The data on >> disk just keeps growing at an explosive rate. So much so we ported this to >> a DB to see the difference and the DB is much smaller. I was searching to >> see if someone has the same issue. This is also killing performance. >> >> Founds this: >> >> https://cwiki.apache.org/confluence/display/IGNITE/IEP-47%3A+Native+persistence+defragmentation >> >> Apparently, there is no auto-rebalancing of pages? or cleanup of pages? >> >> Has anyone implemented a workaround to rebuild the cache and indexes say >> on a weekly basis to get it to behave reasonably? >> >> Thanks >> >
Re: Defrag?
Hello! I don't think there's anything ready to use, but "killing performance" from fragmentation is also not something reported too often. Regards, -- Ilya Kasnacheev ср, 16 июн. 2021 г. в 04:39, Ryan Trollip : > We see continual very large growth to data with ignite native. We have a > very chatty use case that's creating and deleting stuff often. The data on > disk just keeps growing at an explosive rate. So much so we ported this to > a DB to see the difference and the DB is much smaller. I was searching to > see if someone has the same issue. This is also killing performance. > > Founds this: > > https://cwiki.apache.org/confluence/display/IGNITE/IEP-47%3A+Native+persistence+defragmentation > > Apparently, there is no auto-rebalancing of pages? or cleanup of pages? > > Has anyone implemented a workaround to rebuild the cache and indexes say > on a weekly basis to get it to behave reasonably? > > Thanks >
