메뉴 건너뛰기

Bigdata, Semantic IoT, Hadoop, NoSQL

Bigdata, Hadoop ecosystem, Semantic IoT등의 프로젝트를 진행중에 습득한 내용을 정리하는 곳입니다.
필요한 분을 위해서 공개하고 있습니다. 문의사항은 gooper@gooper.com로 메일을 보내주세요.


1. hdfs-site.xml과 yarn-site.xml의 설정을 다시 확인한다.

 가. hdfs-site.xml

   <property>
     <name>dfs.hosts.exclude</name>
     <value>$HOME/hadoop/etc/hadoop/nodes.exclude</value>
   </property>
   <property>
     <name>dfs.host</name>
     <value>$HOME/hadoop/etc/hadoop/nodes.include</value>
   </property>


 나. yarn-site.xml

  <property>
   <name>yarn.resourcemanager.nodes.include-path</name>
   <value$HOME/hadoop/etc/hadoop/nodes.include</value>
  </property>
  <property>
   <name>yarn.resourcemanager.nodes.exclude-path</name>
   <value$HOME/hadoop/etc/hadoop/nodes.exclude</value>
  </property>


2. hdfs fsck -storagepolicies 혹은 hdfs fsck -blocks / 를 실행하여 Block의 상태를 확인한다.

 결과는 하단 참조


3. 2의 결과가 Status: CORRUPT이면 적절한 조치를 취한다.

 hdfs fsck -delete 혹은 hdfs fsck -move


4. 2을 다시 실행하여 Status: HEALTHY인지 확인한다.

  결과는 하단 참조


5. 필요시 Decommission과정을 다시 수행한다.

hdfs dfsadmin -refreshNodes

yarn rmadmin -refreshNodes


* Decommission이 수일 혹은 수주 동안 진행될수도 있는데 속도를 증가시키는 방법으로 hdfs-site.xml에 다음을 추가/반영시켜준다.

   (참고 : https://community.hortonworks.com/questions/102621/node-decommissioning-progressing-too-slowly.html)

   <property>
     <name>dfs.namenode.replication.max-streams</name>
     <value>50</value>
   </property>
  
   <property>
     <name>dfs.namenode.replication.max-streams-hard-limit</name>
     <value>100</value>
   </property>
  
   <property>
     <name>dfs.namenode.replication.work.multiplier.per.iteration</name>
     <value>200</value>
   </property>



-----------hdfs fsck -storagepolicies실행 결과(Status: CORRUPT)----------

.....

(생략)

....

/user/hadoop/spark/local-1510393605261: MISSING 1 blocks of total size 134217728 B......
/user/hadoop/spark/local-1511150952538:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1078958243_5217532. Target Replicas is 3 but found 1 replica(s).

/user/hadoop/spark/local-1511150952538:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1078982811_5242100. Target Replicas is 3 but found 2 replica(s).
.
/user/hadoop/spark/local-1511756383245: MISSING 1 blocks of total size 8357126 B.....
/user/hadoop/spark/local-1511848071791:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079042189_5301478. Target Replicas is 3 but found 2 replica(s).
..
/user/hadoop/spark/local-1511858124646: MISSING 1 blocks of total size 40291 B..
/user/hadoop/spark/local-1511858518707:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079043514_5302803. Target Replicas is 3 but found 1 replica(s).
....
/user/hadoop/spark/local-1511861829455:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079044160_5303449. Target Replicas is 3 but found 1 replica(s).
..
/user/hadoop/spark/local-1511921506635:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079057453_5316742. Target Replicas is 3 but found 2 replica(s).
...
/user/hadoop/spark/local-1511931435456: MISSING 1 blocks of total size 702011 B..
/user/hadoop/spark/local-1511932067927:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079058984_5318273. Target Replicas is 3 but found 2 replica(s).
.......
/user/hadoop/spark/local-1511939175974:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079060057_5319346. Target Replicas is 3 but found 2 replica(s).
...
/user/hadoop/spark/local-1511942070784:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079060488_5319777. Target Replicas is 3 but found 2 replica(s).
.
.
/user/hadoop/spark/local-1511945803722:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079061302_5320591. Target Replicas is 3 but found 2 replica(s).
.
/user/hadoop/spark/local-1511946633083:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079061444_5320733. Target Replicas is 3 but found 2 replica(s).
.
/user/hadoop/spark/local-1512003403329:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079074161_5333450. Target Replicas is 3 but found 1 replica(s).
.
/user/hadoop/spark/local-1512008787877:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079074799_5334088. Target Replicas is 3 but found 2 replica(s).
.
/user/hadoop/spark/local-1512018010728:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079076017_5335306. Target Replicas is 3 but found 2 replica(s).
............
/user/hadoop/spark/local-1512121416466:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079096405_5355695. Target Replicas is 3 but found 2 replica(s).
.....
/user/hadoop/spark/local-1512361519396:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079147739_5407029. Target Replicas is 3 but found 2 replica(s).
.....
/user/hadoop/spark/local-1512373036884:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079149109_5408399. Target Replicas is 3 but found 2 replica(s).
..
/user/hadoop/spark/local-1512373950155:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079149191_5408481. Target Replicas is 3 but found 1 replica(s).
..........................
/user/hadoop/spark/local-1512641606927:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079196301_5455600. Target Replicas is 3 but found 2 replica(s).
.
/user/hadoop/spark/local-1512694548543:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079208186_5467485. Target Replicas is 3 but found 2 replica(s).
.....
/user/hadoop/spark/local-1512712721899:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079272068_5531367. Target Replicas is 3 but found 2 replica(s).
.....
/user/hadoop/spark/local-1512978676213:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079331781_5591080. Target Replicas is 3 but found 2 replica(s).
...
/user/hadoop/spark/local-1513040318768:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079345530_5604829. Target Replicas is 3 but found 2 replica(s).
...
/user/hadoop/spark/local-1513154800735:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079372104_5631403. Target Replicas is 3 but found 1 replica(s).
..
/user/hadoop/spark/local-1513239737761:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079391263_5650563. Target Replicas is 3 but found 2 replica(s).

/user/hadoop/spark/local-1513239737761:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079416745_5676128. Target Replicas is 3 but found 1 replica(s).

/user/hadoop/spark/local-1513239737761:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079454497_5713964. Target Replicas is 3 but found 1 replica(s).
....
/user/hadoop/spark/local-1513933165296:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079584889_5844405. Target Replicas is 3 but found 1 replica(s).
...
/user/pineone/gooper-test/icbms_2017-07-21_13-28-17.nq.gz:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1076598010_2857261. Target Replicas is 3 but found 2 replica(s).
.....
/user/pineone/in/tomcat-juli.jar:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1073741825_1001. Target Replicas is 3 but found 2 replica(s).
.......
/user/pineone/out3/part-r-00000:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1073744812_3988. Target Replicas is 3 but found 2 replica(s).
.......
.....Status: CORRUPT
 Total size:    1136215827409 B (Total open files size: 939529123 B)
 Total dirs:    1415
 Total files:   1864205
 Total symlinks:                0 (Files currently being written: 12)
 Total blocks (validated):      1864295 (avg. block size 609461 B) (Total open file blocks (not validated): 18)
  ********************************
  UNDER MIN REPL'D BLOCKS:      11 (5.900354E-4 %)
  dfs.namenode.replication.min: 1
  CORRUPT FILES:        11
  MISSING BLOCKS:       11
  MISSING SIZE:         321480184 B
  ********************************
 Minimally replicated blocks:   1864284 (99.99941 %)
 Over-replicated blocks:        0 (0.0 %)
 Under-replicated blocks:       545406 (29.255348 %)
 Mis-replicated blocks:         0 (0.0 %)
 Default replication factor:    3
 Average block replication:     2.661861
 Corrupt blocks:                0
 Missing replicas:              630358 (11.270713 %)
 Number of data-nodes:          8
 Number of racks:               1
FSCK ended at Tue Jan 02 15:42:32 KST 2018 in 196868 milliseconds
FSCK ended at Tue Jan 02 15:42:32 KST 2018 in 196868 milliseconds
fsck encountered internal errors!


Fsck on path '/' FAILED



-----------hdfs fsck -storagepolicies실행 결과(Status: HEALTHY)----------

.....

(생략)

....

/user/hadoop/spark/local-1513239737761:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079416745_5676128. Target Replicas is 3 but found 1 replica(s).

/user/hadoop/spark/local-1513239737761:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079454497_5713964. Target Replicas is 3 but found 1 replica(s).
....
/user/hadoop/spark/local-1513933165296:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079584889_5844405. Target Replicas is 3 but found 1 replica(s).
...
/user/hadoop/spark/local-1514451281961:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1079748353_6021470. Target Replicas is 3 but found 1 replica(s).
.
/user/pineone/gooper-test/icbms_2017-07-21_13-28-17.nq.gz:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1076598010_2857261. Target Replicas is 3 but found 2 replica(s).
.....
/user/pineone/in/tomcat-juli.jar:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1073741825_1001. Target Replicas is 3 but found 2 replica(s).
.......
/user/pineone/out3/part-r-00000:  Under replicated BP-605282214-166.104.112.43-1498555165989:blk_1073744812_3988. Target Replicas is 3 but found 2 replica(s).
........
....Status: HEALTHY
 Total size:    1136067627332 B (Total open files size: 1312 B)
 Total dirs:    1446
 Total files:   1864304
 Total symlinks:                0 (Files currently being written: 4)
 Total blocks (validated):      1864376 (avg. block size 609355 B) (Total open file blocks (not validated): 3)
 Minimally replicated blocks:   1864376 (100.0 %)
 Over-replicated blocks:        0 (0.0 %)
 Under-replicated blocks:       526644 (28.247736 %)
 Mis-replicated blocks:         0 (0.0 %)
 Default replication factor:    3
 Average block replication:     2.682025
 Corrupt blocks:                0
 Missing replicas:              592825 (10.599168 %)
 Number of data-nodes:          8
 Number of racks:               1

Blocks satisfying the specified storage policy:
Storage Policy                  # of blocks       % of blocks
DISK:5(HOT)                   796652              42.7302%
DISK:3(HOT)                   595925              31.9638%
DISK:4(HOT)                   471514              25.2907%
DISK:6(HOT)                      274               0.0147%
DISK:1(HOT)                       10               0.0005%
DISK:2(HOT)                        1               0.0001%

All blocks satisfy specified storage policy.
FSCK ended at Tue Jan 02 17:08:00 KST 2018 in 184737 milliseconds


The filesystem under path '/' is HEALTHY

번호 제목 글쓴이 날짜 조회 수
741 VirtualBox에 ubuntu 설치 하기 (12.10) file 구퍼 2013.03.04 1768
740 우분투 root 패스워드 설정하기 구퍼 2013.03.04 1314
739 메이븐 (maven) 설치 및 이클립스 연동하기 file 구퍼 2013.03.06 2280
738 Hadoop 설치 및 시작하기 file 구퍼 2013.03.06 1951
737 Hadoop wordcount 소스 작성 file 구퍼 2013.03.06 1888
736 이클립스에서 생성한 jar 파일 hadoop 으로 실행하기 file 구퍼 2013.03.06 2836
735 ExWordCount jar파일 file 구퍼 2013.03.06 1336
734 Hadoop Cluster 설치 (Hadoop+Zookeeper+Hbase) file 구퍼 2013.03.07 3995
733 Hive+mysql 설치 및 환경구축하기 file 구퍼 2013.03.07 2722
732 Hive 사용법 및 쿼리 샘플코드 구퍼 2013.03.07 2991
731 hadoop 설치(3대) file 구퍼 2013.03.07 2613
730 hadoop설치시 참고사항 구퍼 2013.03.08 2131
729 MySQL 다운로드 및 리눅스에서 간단 컴파일 설치 구퍼 2013.03.08 1869
728 checking for termcap functions library... configure: error: No curses/termcap library found 구퍼 2013.03.08 4120
727 ../depcomp: line 512 exec : g++ : not found 구퍼 2013.03.08 2062
726 org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /tmp/hadoop-root/dfs/name is in an inconsistent state: storage directory does not exist or is not accessible. 구퍼 2013.03.11 14781
725 HBase 설치하기 – Pseudo-distributed file 구퍼 2013.03.12 2644
724 HBase 설치하기 – Fully-distributed 구퍼 2013.03.12 3548
723 Cacti로 Hadoop 모니터링 하기 file 구퍼 2013.03.12 2367
722 org.apache.hadoop.hbase.PleaseHoldException: Master is initializing 구퍼 2013.03.15 2668

A personal place to organize information learned during the development of such Hadoop, Hive, Hbase, Semantic IoT, etc.
We are open to the required minutes. Please send inquiries to gooper@gooper.com.

위로