I've another regionserver (hb-d2) that crashed (I can easily reproduce
the issue by continuing injections), and as I see in master log, it gets
information about hb-d2 every 5 minutes. I suppose it's what helps him
to note if a node is dead or not. However it adds hb-d2 to the dead node
list at 13:32:20, so before 5 minutes since the last time it got the
server information. Is it normal ?
2012-06-01 13:02:36,309 DEBUG
org.apache.hadoop.hbase.master.LoadBalancer: Server information:
hb-d5,60020,1338553124247=47, hb-d4,60020,1338553126577=47,
hb-d7,60020,1338553124279=46, hb-d10,60020,1338553126695=47, hb-d6,60020,133
8553124588=47, hb-d8,60020,1338553124113=47,
hb-d2,60020,1338553126560=47, hb-d11,60020,1338553124329=47,
hb-d12,60020,1338553126567=47, hb-d1,60020,1338553126474=47,
hb-d9,60020,1338553124179=47
..
2012-06-01 13:07:36,319 DEBUG
org.apache.hadoop.hbase.master.LoadBalancer: Server information:
hb-d5,60020,1338553124247=47, hb-d4,60020,1338553126577=47,
hb-d7,60020,1338553124279=46, hb-d10,60020,1338553126695=47, hb-d6,60020,133
8553124588=47, hb-d8,60020,1338553124113=47,
hb-d2,60020,1338553126560=47, hb-d11,60020,1338553124329=47,
hb-d12,60020,1338553126567=47, hb-d1,60020,1338553126474=47,
hb-d9,60020,1338553124179=47
..
2012-06-01 13:12:36,328 DEBUG
org.apache.hadoop.hbase.master.LoadBalancer: Server information:
hb-d5,60020,1338553124247=47, hb-d4,60020,1338553126577=47,
hb-d7,60020,1338553124279=46, hb-d10,60020,1338553126695=47, hb-d6,60020,133
8553124588=47, hb-d8,60020,1338553124113=47,
hb-d2,60020,1338553126560=47, hb-d11,60020,1338553124329=47,
hb-d12,60020,1338553126567=47, hb-d1,60020,1338553126474=47,
hb-d9,60020,1338553124179=47
..
2012-06-01 13:17:36,337 DEBUG
org.apache.hadoop.hbase.master.LoadBalancer: Server information:
hb-d5,60020,1338553124247=47, hb-d4,60020,1338553126577=47,
hb-d7,60020,1338553124279=46, hb-d10,60020,1338553126695=47, hb-d6,60020,133
8553124588=47, hb-d8,60020,1338553124113=47,
hb-d2,60020,1338553126560=47, hb-d11,60020,1338553124329=47,
hb-d12,60020,1338553126567=47, hb-d1,60020,1338553126474=47,
hb-d9,60020,1338553124179=47
..
2012-06-01 13:22:36,346 DEBUG
org.apache.hadoop.hbase.master.LoadBalancer: Server information:
hb-d5,60020,1338553124247=47, hb-d4,60020,1338553126577=47,
hb-d7,60020,1338553124279=46, hb-d10,60020,1338553126695=47, hb-d6,60020,133
8553124588=47, hb-d8,60020,1338553124113=47,
hb-d2,60020,1338553126560=47, hb-d11,60020,1338553124329=47,
hb-d12,60020,1338553126567=47, hb-d1,60020,1338553126474=47,
hb-d9,60020,1338553124179=47
..
2012-06-01 13:27:36,353 DEBUG
org.apache.hadoop.hbase.master.LoadBalancer: Server information:
hb-d5,60020,1338553124247=47, hb-d4,60020,1338553126577=47,
hb-d7,60020,1338553124279=46, hb-d10,60020,1338553126695=47, hb-d6,60020,133
8553124588=47, hb-d8,60020,1338553124113=47,
hb-d2,60020,1338553126560=47, hb-d11,60020,1338553124329=47,
hb-d12,60020,1338553126567=47, hb-d1,60020,1338553126474=47,
hb-d9,60020,1338553124179=47
..
2012-06-01 13:32:20,048 INFO
org.apache.hadoop.hbase.zookeeper.RegionServerTracker: RegionServer
ephemeral node deleted, processing expiration [hb-d2,60020,1338553126560]
2012-06-01 13:32:20,048 DEBUG
org.apache.hadoop.hbase.master.ServerManager:
Added=hb-d2,60020,1338553126560 to dead servers, submitted shutdown
handler to be executed, root=false, meta=false
2012-06-01 13:32:20,048 INFO
org.apache.hadoop.hbase.master.handler.ServerShutdownHandler: Splitting
logs for hb-d2,60020,1338553126560
On 6/1/12 3:25 PM, Cyril Scetbon wrote:
I've added hbase.hregion.memstore.mslab.enabled = true to the
configuration of all regionservers and add flags -XX:+UseParNewGC
-XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode
-XX:CMSInitiatingOccupancyFraction=60 to the hbase environment
However my regionservers are still crashing when I load data into the
cluster
Here are the logs for the node hb-d3 that crashed at 12:56
- GC logs : http://pastebin.com/T0d0y8pZ
- regionserver logs : http://pastebin.com/n6v9x3XM
thanks
On 5/31/12 11:12 PM, Jean-Daniel Cryans wrote:
Both, also you could bigger log snippets (post them on something like
pastebin.com) and we could see more evidence of the issue.
J-D
On Thu, May 31, 2012 at 2:09 PM, Cyril
Scetbon<cyril.scet...@free.fr> wrote:
On 5/31/12 11:00 PM, Jean-Daniel Cryans wrote:
What I'm seeing looks more like GC issues. Start reading this:
http://hbase.apache.org/book.html#gc
J-D
Hi,
Really not sure cause I've enabled gcc's verbose option and I don't see
anything taking a long time. Maybe I can check again on one node. On
which
node do you think I should check GC issue ?
--
Cyril SCETBON
--
Cyril SCETBON
