We did a pool of connections at a bolt instance level. Works fine till date...
On Sun, Sep 27, 2015 at 10:47 PM, Linyuxin <[email protected]> wrote: > Hi All, > > I found many connections created by Bolts may cause a lot of > pressure. Especially, the short connections cause the ‘logon storm’ for > oracle. > > So, I want to know if anyway to pooling connections in Bolts, such as for > oracle, Hbase, Redis ...... > > > > I really know how to create a connection pool in a Monolithic system, such > as C3P0 for oracle, Jedis pool for Redis. But it seems not appropriate for > Bolts. > > In my mind, there may be two ways to fix it: > > 1． Create a connection pool per worker. Means using a static field per > jvm process. > > But if the worker crash down, “connection leak” pops. > > However, we can set the “connection timeout” on server side to reduce the > harm. But it still is not an elegant implementation. > > 2． Find a proxy to be the pool. Every bolt borrows a connection from it > when needs. But by now, I don’t find an appropriate component. And IPC may > cause performance problems. > > > > So, any suggestion? > > > ------------------------------ > > > Thanks and Regards, > > 林钰鑫 / Derek >
