Re: heap memory running
24GB is often cited as an upper limit, but YMMV. It also depends if you need memory for MapReduce, if you are using it. J-D On Wed, Jun 19, 2013 at 3:17 PM, prakash kadel prakash.ka...@gmail.com wrote: hi every one, i am quite new to base and java. I have a few questions. 1. on the web ui for hbase i have the following entry in the region server mining,60020,13711358624Fri Jun 14 00:04:22 GMT 2013requestsPerSecond=0, numberOfOnlineRegions=106, usedHeapMB=5577, maxHeapMB=7933 when the hbase is idle with no requests the usedHeapMB hovers around 5000MB, shouldn't it go down after some idle time? what is occupying the heap when no requests are being made? 2. I have assigned 8GB for heap on a 48GB machine, i dont mind assigning more of it to hbase. What is the recommended size for the heap? Sincerely, Prakash
Re: heap memory running
Also, if you assign only 24GB for the heap, the OS will still use some of the remaining memory as cache. And you will need some memory for the hadoop process too. JM 2013/6/21 Jean-Daniel Cryans jdcry...@apache.org: 24GB is often cited as an upper limit, but YMMV. It also depends if you need memory for MapReduce, if you are using it. J-D On Wed, Jun 19, 2013 at 3:17 PM, prakash kadel prakash.ka...@gmail.com wrote: hi every one, i am quite new to base and java. I have a few questions. 1. on the web ui for hbase i have the following entry in the region server mining,60020,13711358624Fri Jun 14 00:04:22 GMT 2013requestsPerSecond=0, numberOfOnlineRegions=106, usedHeapMB=5577, maxHeapMB=7933 when the hbase is idle with no requests the usedHeapMB hovers around 5000MB, shouldn't it go down after some idle time? what is occupying the heap when no requests are being made? 2. I have assigned 8GB for heap on a 48GB machine, i dont mind assigning more of it to hbase. What is the recommended size for the heap? Sincerely, Prakash
heap memory running
hi every one, i am quite new to base and java. I have a few questions. 1. on the web ui for hbase i have the following entry in the region server mining,60020,13711358624Fri Jun 14 00:04:22 GMT 2013requestsPerSecond=0, numberOfOnlineRegions=106, usedHeapMB=5577, maxHeapMB=7933 when the hbase is idle with no requests the usedHeapMB hovers around 5000MB, shouldn't it go down after some idle time? what is occupying the heap when no requests are being made? 2. I have assigned 8GB for heap on a 48GB machine, i dont mind assigning more of it to hbase. What is the recommended size for the heap? Sincerely, Prakash
