Thanks Shawn and Amrit! On Thu, Oct 12, 2017 at 4:05 PM, Shawn Heisey <apa...@elyograg.org> wrote:
> On 10/11/2017 8:22 PM, Gunalan V wrote: > >> Could someone please let me know what this user-level keeper exception in >> zookeeper mean? and How to fix the same. >> > > Those are not errors. They are INFO logs. They are not an indication of > a problem. If they were a problem, they would most likely be at the WARN > or ERROR level instead of INFO. > > The message indicates that 16 requests came in to create "/overseer" in > the zookeeper database. These requests all failed because that entry in > the database was already there. The failure is just information, not an > error. > > All of the requests indicate that they came from session ID > 0x35f0e3edd390001. An earlier entry in the log indicates that this session > is a connection from 10.138.66.12. > > The code in Solr that creates that ZK node looks like it is called in MANY > places. Once of those places is the code for leader elections. This > probably means that it gets called at least once for every shard in the > entire cloud on each Solr node startup, and could be called quite > frequently for other reasons. > > It could be argued that this code in Solr should check for the existence > of the node before it tries to create it, but as I already said, this isn't > a problem. > > Thanks, > Shawn > >
