On 3/2/2018 6:54 AM, Jim Keeney wrote:
Thanks for jumping in on the ZK side as well.
I will take a hard look at my config files but I checked and I do not have
any one file over 1MB. The combined files (10 indexes) is 2.2MB.
I am using micros for the nodes which are very limited in memory.
I'm not currently using a java.env file so I guess I'm using the default
values for the JVM which is typically xmx512M if I remember correctly.
Could it be just a memory issue?
Usually Java on Linux has a default heap size of about 4GB. But it
would be highly dependent on the amount of memory actually present on
the machine. Just yesterday, I saw Java report a 6GB default heap size,
on a machine with 24GB of memory. Information I can find about AWS
instance types says that a micro instance has 1GB of memory. So the
default heap size is probably quite small.
Even in small server situations, I would strongly recommend that anytime
you have a java commandline, you define -Xmx for the max heap, and -Xms
should probably be set as well, to the same value as -Xmx. That way
you're not relying on defaults, you're absolutely sure what the heap
size is.
For ZK servers handling 2 megabytes of config data plus the rest of a
small SolrCloud install, something like 256MB or 512MB of heap would
probably be plenty. ZK holds a copy of its entire database in memory.
Small SolrCloud installs won't put much of a load on ZK. A micro
instance should be plenty for ZK when the software using it is Solr, as
long as that's the only thing it's running.
Thanks,
Shawn
