Hi Atri, Thanks for the prompt reply.
There are no deletion or updation we are trying to merge offline generated sorted indices into a single sorted segment index. This entire process is completely offline and there is no online serving for this index taking no live updates like addition or deletion. Each index is of size is close to 1 GB. We are trying to merge 25 such indices into a single index using add indexes of Lucene IndexWriter using ConcurrentMergeScheduler. Is there any recommendation on how to go about merging multiple sorted indices into a single index more efficiently? Regards, Aravind S On Thu, Aug 8, 2019, 11:57 AM Atri Sharma <[email protected]> wrote: > Have you tried a more frequent merging? What are the average sizes of > your segments, and what does your deletion/updates rate look like? > > On Thu, Aug 8, 2019 at 1:39 AM Aravind S (User Intent) > <[email protected]> wrote: > > > > Hi, > > > > We are currently trying to merge sorted indices in an offline process. > This process is taking a lot of time in merging. We tried using > ConcurrentMergeScheduler with tiered merge policy. > > > > We see the merger threads to be maximum to be set as 4 in > ConcurrentMergerScheduler setDefaultMaxMergesAndThreads method. > > > > Is there a way to decrease the time in merging this sorted indices. Is > there any recommendation that could be followed to scale merging with an > increase in a number of indices to be merged. > > > > Regards, > > Aravind S > > > > > ----------------------------------------------------------------------------------------- > > > > This email and any files transmitted with it are confidential and > intended solely for the use of the individual or entity to whom they are > addressed. If you have received this email in error, please notify the > system manager. This message contains confidential information and is > intended only for the individual named. If you are not the named addressee, > you should not disseminate, distribute or copy this email. Please notify > the sender immediately by email if you have received this email by mistake > and delete this email from your system. 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