Thank you for your idea. Your solution should work. May it be possible to perform the following operation? - Create a new cache and isolate it from being replicated with the old cache. - Populate data on new cache - Shutdown old cache and remove the new cache isolation.
fsapei > Am 30.11.2015 um 12:51 schrieb Denis Magda <dma...@gridgain.com>: > > Fsapei, > > Ignite neither supports a cache renaming nor has a notion of aliases for > caches. > > In general you can support aliases-like functionality by extending Ignite's > JDBC Driver implementation. > The flow should look like this: > - create a new cache and populate it; > - redirect all the queries to the new cache. To achieve this the code has to > parse a SQL query string and exchange an aliase name with a real cache name; > - delete the old cache. > > Will this work for you? > > -- > Denis > > On 11/30/2015 2:22 PM, Ferry Syafei Sapei wrote: >> Hi Denis, >> >> Using a database, we can import new data to new tables and then rename the >> table. >> >> In ElasticSearch, there is an alias. The client executes queries against >> index alias. On the background, the alias will point to the actual index. In >> my use case, I just need to create a new index and then update the alias’ >> reference to the new index. The client does not realize that the index has >> been changed, since it only communicates with the alias. >> >> Are there these kind of operations in apache ignite? >> >> >> fsapei >> >> >>> Am 30.11.2015 um 11:57 schrieb Denis Magda <dma...@gridgain.com >>> <mailto:dma...@gridgain.com>>: >>> >>> Hi Fsapei, >>> >>> I don't think that it's feasible or at least easy to implement your >>> approach without a downtime or changing cache name in queries once the >>> second cache is fully propagated. >>> How would you implement your use case if instead of an Ignite cache you >>> would be using a data base? >>> >>> -- >>> Denis >>> >>> On 11/28/2015 11:50 AM, Ferry Syafei Sapei wrote: >>>> Thank you for the reply. >>>> >>>> The client uses JDBC Driver to get the data from Ignite. >>>> >>>> The swap between new cache and old cache should be hidden from the client. >>>> >>>> Would it be possible to do this in Ignite? >>>> >>>> My first idea is to create a new cache and fill it with new data data. >>>> Afterwards, within a transaction, the old cache content will be deleted >>>> and all the content from new cache will be inserted to the old cache. >>>> >>>> >>>>> Am 28.11.2015 um 03:35 schrieb Dmitriy Setrakyan < >>>>> <mailto:dsetrak...@apache.org>dsetrak...@apache.org >>>>> <mailto:dsetrak...@apache.org>>: >>>>> >>>>> Hi Fsapei, >>>>> >>>>> Ignite supports dynamic caches, so you can create and destroy caches on >>>>> the fly: >>>>> https://apacheignite.readme.io/docs/data-grid#section-jcache >>>>> <https://apacheignite.readme.io/docs/data-grid#section-jcache> >>>>> >>>>> To support your use case, you can: >>>>> >>>>> 1. create a new cache and start populating it >>>>> 2. while the new cache is populated, the queries should go to the old >>>>> cache. >>>>> 3. when new cache is fully populated, route the queries to the new cache >>>>> 4. delete the old cache >>>>> >>>>> Will this work? >>>>> >>>>> D. >>>>> >>>>> On Sat, Nov 28, 2015 at 3:38 AM, Ferry Syafei Sapei < >>>>> <mailto:ferry.sa...@googlemail.com>ferry.sa...@googlemail.com >>>>> <mailto:ferry.sa...@googlemail.com>> wrote: >>>>> Hallo, >>>>> >>>>> I would like to use Ignite as Data Grid. The cache will be initially >>>>> loaded with a lot of data (e.g. a CSV file with a size more than 10 GB). >>>>> >>>>> When a new CSV file is available, the current Cache content must be >>>>> replaced with the new data from the new CSV. The old cache content must >>>>> be completely deleted. >>>>> >>>>> The switch from old cache content to the new one must happen without >>>>> downtime. When any SQL Clients execute query during the switch, they >>>>> should still obtain any data from the old cache content, since the switch >>>>> has not finished yet. >>>>> >>>>> Could somebody please advise me, how to continuously update the cache >>>>> like the description above? >>>>> >>>>> Thank you. >>>>> >>>>> >>>>> Best regards, >>>>> fsapei >>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>> >>> -- >>> Regards, >>> Denis Magda >>> Lead Professional Services Engineer, GridGain Systems >>> http://www.gridgain.com/ <http://www.gridgain.com/>
