Hi there- You probably want to read this in the Ref Guide...
http://hbase.apache.org/book.html#jvm On 3/3/12 8:05 AM, "Ferdy Galema" <[email protected]> wrote: >Hi, > >I'm running regionservers with 2GB heap and following tuning options: >-XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:NewRatio=16 >-XX:CMSInitiatingOccupancyFraction=70 -XX:+UseCMSInitiatingOccupancyOnly >-XX:MaxGCPauseMillis=100 > >A regionserver aborted (YouAreDeadException) and this was printed in the >gc >logs (all is shown up until the abort) > >211663.516: [GC 211663.516: [ParNew: 118715K->13184K(118912K), 0.0445390 >secs] 1373940K->1289814K(2233472K), 0.0446420 secs] [Times: user=0.14 >sys=0.01, real=0.05 secs] >211663.686: [GC 211663.686: [ParNew: 118912K->13184K(118912K), 0.0594280 >secs] 1395542K->1310185K(2233472K), 0.0595420 secs] [Times: user=0.15 >sys=0.00, real=0.06 secs] >211663.869: [GC 211663.869: [ParNew: 118790K->13184K(118912K), 0.0434820 >secs] 1415792K->1331317K(2233472K), 0.0435930 secs] [Times: user=0.13 >sys=0.01, real=0.04 secs] >211667.598: [GC 211667.598: [ParNew (promotion failed): >118912K->118912K(118912K), 0.0225390 secs]211667.621: [CMS: >1330845K->1127914K(2114560K), 51.3610670 secs] >1437045K->1127914K(2233472K), [CMS Perm : 20680K->20622K(34504K)], >51.3838170 secs] [Times: user=1.82 sys=0.31, real=51.38 secs] >211719.713: [GC 211719.714: [ParNew: 105723K->13184K(118912K), 0.0176130 >secs] 1233638K->1149393K(2233472K), 0.0177230 secs] [Times: user=0.07 >sys=0.00, real=0.02 secs] >211719.851: [GC 211719.852: [ParNew: 118912K->13184K(118912K), 0.0281860 >secs] 1255121K->1170269K(2233472K), 0.0282970 secs] [Times: user=0.10 >sys=0.01, real=0.03 secs] >211719.993: [GC 211719.993: [ParNew: 118795K->13184K(118912K), 0.0276320 >secs] 1275880K->1191268K(2233472K), 0.0277350 secs] [Times: user=0.09 >sys=0.00, real=0.03 secs] >211720.490: [GC 211720.490: [ParNew: 118912K->13184K(118912K), 0.0624650 >secs] 1296996K->1210640K(2233472K), 0.0625560 secs] [Times: user=0.15 >sys=0.00, real=0.06 secs] >211720.687: [GC 211720.687: [ParNew: 118702K->13184K(118912K), 0.1651750 >secs] 1316159K->1231993K(2233472K), 0.1652660 secs] [Times: user=0.25 >sys=0.01, real=0.17 secs] >211721.038: [GC 211721.038: [ParNew: 118912K->13184K(118912K), 0.0952750 >secs] 1337721K->1252598K(2233472K), 0.0953660 secs] [Times: user=0.15 >sys=0.00, real=0.09 secs] >Heap > par new generation total 118912K, used 86199K [0x00002aaaae1f0000, >0x00002aaab62f0000, 0x00002aaab62f0000) > eden space 105728K, 69% used [0x00002aaaae1f0000, 0x00002aaab293dfa8, >0x00002aaab4930000) > from space 13184K, 100% used [0x00002aaab4930000, 0x00002aaab5610000, >0x00002aaab5610000) > to space 13184K, 0% used [0x00002aaab5610000, 0x00002aaab5610000, >0x00002aaab62f0000) > concurrent mark-sweep generation total 2114560K, used 1239414K >[0x00002aaab62f0000, 0x00002aab373f0000, 0x00002aab373f0000) > concurrent-mark-sweep perm gen total 34504K, used 20728K >[0x00002aab373f0000, 0x00002aab395a2000, 0x00002aab3c7f0000) > > >Why did a GC took 51 seconds? The machine still had enough memory >available >so it could not be swapping. (swapiness is set to 0). From the 15 >regionservers in total, I often see this specific regionserver fail. What >do you recommended in this situation? > >Ferdy.
