stack created HBASE-6975:
----------------------------
Summary: HBASE-6940 enabling GC needs refinement
Key: HBASE-6975
URL: https://issues.apache.org/jira/browse/HBASE-6975
Project: HBase
Issue Type: Bug
Reporter: stack
Priority: Blocker
Fix For: 0.96.0
Hmmm... I think HBASE-6940 as done is off. Here is what happens when I run
shell now:
{code}
stack:trunk stack$ ./bin/hbase shell
2012-10-10T21:11:29.999-0700: [GC [ParNew: 17024K->973K(19136K), 0.0017174
secs] 17024K->973K(83008K), 0.0017540 secs] [Times: user=0.01 sys=0.00,
real=0.00 secs]
2012-10-10T21:11:30.177-0700: [GC [ParNew: 17997K->973K(19136K), 0.0015124
secs] 17997K->973K(83008K), 0.0015376 secs] [Times: user=0.00 sys=0.00,
real=0.00 secs]
2012-10-10T21:11:30.368-0700: [GC [ParNew: 17997K->870K(19136K), 0.0011471
secs] 17997K->870K(83008K), 0.0011700 secs] [Times: user=0.00 sys=0.00,
real=0.00 secs]
2012-10-10T21:11:30.526-0700: [GC [ParNew: 17894K->1018K(19136K), 0.0012391
secs] 17894K->1018K(83008K), 0.0012638 secs] [Times: user=0.00 sys=0.00,
real=0.00 secs]
2012-10-10T21:11:30.663-0700: [GC [ParNew: 18042K->723K(19136K), 0.0030381
secs] 18042K->1255K(83008K), 0.0030623 secs] [Times: user=0.01 sys=0.00,
real=0.00 secs]
2012-10-10T21:11:30.770-0700: [GC [ParNew: 17747K->414K(19136K), 0.0012216
secs] 18279K->982K(83008K), 0.0012453 secs] [Times: user=0.01 sys=0.00,
real=0.00 secs]
2012-10-10T21:11:30.887-0700: [GC [ParNew: 17438K->480K(19136K), 0.0015418
secs] 18006K->1088K(83008K), 0.0015664 secs] [Times: user=0.00 sys=0.00,
real=0.00 secs]
2012-10-10T21:11:30.999-0700: [GC [ParNew: 17504K->570K(19136K), 0.0012315
secs] 18112K->1239K(83008K), 0.0012555 secs] [Times: user=0.01 sys=0.00,
real=0.01 secs]
2012-10-10T21:11:31.105-0700: [GC [ParNew: 17594K->571K(19136K), 0.0011522
secs] 18263K->1307K(83008K), 0.0011771 secs] [Times: user=0.00 sys=0.00,
real=0.00 secs]
2012-10-10T21:11:31.255-0700: [GC [ParNew: 17595K->853K(19136K), 0.0038433
secs] 18331K->1683K(83008K), 0.0038686 secs] [Times: user=0.02 sys=0.01,
real=0.00 secs]
2012-10-10T21:11:31.345-0700: [GC [ParNew: 17877K->869K(19136K), 0.0035232
secs] 18707K->1779K(83008K), 0.0035554 secs] [Times: user=0.02 sys=0.01,
real=0.00 secs]
2012-10-10T21:11:31.467-0700: [GC [ParNew: 17893K->725K(19136K), 0.0014690
secs] 18803K->1730K(83008K), 0.0014909 secs] [Times: user=0.00 sys=0.00,
real=0.00 secs]
2012-10-10T21:11:31.625-0700: [GC [ParNew: 17749K->729K(19136K), 0.0015313
secs] 18754K->1833K(83008K), 0.0015635 secs] [Times: user=0.01 sys=0.00,
real=0.00 secs]
2012-10-10T21:11:31.768-0700: [GC [ParNew: 17753K->526K(19136K), 0.0019404
secs] 18857K->1974K(83008K), 0.0019637 secs] [Times: user=0.01 sys=0.01,
real=0.01 secs]
2012-10-10T21:11:32.011-0700: [GC [ParNew: 17550K->1038K(19136K), 0.0019025
secs] 18998K->2513K(83008K), 0.0019264 secs] [Times: user=0.01 sys=0.00,
real=0.00 secs]
2012-10-10T21:11:32.280-0700: [GC [ParNew: 18062K->2112K(19136K), 0.0035041
secs] 19537K->3737K(83008K), 0.0035283 secs] [Times: user=0.02 sys=0.01,
real=0.00 secs]
2012-10-10T21:11:32.568-0700: [GC [ParNew: 19136K->2112K(19136K), 0.0084894
secs] 20761K->5767K(83008K), 0.0085158 secs] [Times: user=0.04 sys=0.00,
real=0.01 secs]
HBase Shell; enter 'help<RETURN>' for list of supported commands.
Type "exit<RETURN>" to leave the HBase Shell
Version 0.95-SNAPSHOT, rUnknown, Wed Oct 10 21:10:40 PDT 2012
2012-10-10T21:11:32.986-0700: [GC [ParNew: 19136K->1720K(19136K), 0.0064681
secs] 22791K->6478K(83008K), 0.0065296 secs] [Times: user=0.03 sys=0.01,
real=0.01 secs]
hbase(main):001:0>
{code}
So, the GC stuff should only be enabled for HBASE_MASTER_OPTS and
HBASE_REGIONSERVER_OPTS.
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