好的，现在，来weekend110的textinputformat对切片规划的源码分析，
Inputformat默认是textinputformat，一通百通。
这就是今天，weekend110的textinputformat对切片规划的源码分析入口
[LocatedFileStatus{path=hdfs://weekend110:9000/wc/srcdata/words.log; isDirectory=false; length=90; replication=1; blocksize=134217728; modification_time=1469247371536; access_time=1469501356933; owner=hadoop; group=supergroup; permission=rw-r--r--; isSymlink=false}]
[hdfs://weekend110:9000/wc/srcdata/words.log:0+90]
[hadoop@weekend110 ~]$ /home/hadoop/app/hadoop-2.4.1/bin/hadoop fs -ls /tmp
Found 1 items
drwx------ - hadoop supergroup 0 2016-07-23 12:25 /tmp/hadoop-yarn
[hadoop@weekend110 ~]$ /home/hadoop/app/hadoop-2.4.1/bin/hadoop fs -ls /tmp/hadoop-yarn
Found 1 items
drwx------ - hadoop supergroup 0 2016-07-23 12:26 /tmp/hadoop-yarn/staging
[hadoop@weekend110 ~]$ /home/hadoop/app/hadoop-2.4.1/bin/hadoop fs -ls /tmp/hadoop-yarn/staging
Found 2 items
drwx------ - hadoop supergroup 0 2016-07-23 12:25 /tmp/hadoop-yarn/staging/hadoop
drwxr-xr-x - hadoop supergroup 0 2016-07-23 12:26 /tmp/hadoop-yarn/staging/history
[hadoop@weekend110 ~]$ /home/hadoop/app/hadoop-2.4.1/bin/hadoop fs -ls /tmp/hadoop-yarn/staging/history
Found 1 items
drwxrwxrwt - hadoop supergroup 0 2016-07-23 12:26 /tmp/hadoop-yarn/staging/history/done_intermediate
[hadoop@weekend110 ~]$ /home/hadoop/app/hadoop-2.4.1/bin/hadoop fs -ls /tmp/hadoop-yarn/staging/history/done_intermediate
Found 1 items
drwxrwx--- - hadoop supergroup 0 2016-07-28 09:51 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop
[hadoop@weekend110 ~]$ /home/hadoop/app/hadoop-2.4.1/bin/hadoop fs -ls /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop
Found 48 items
-rwxrwx--- 1 hadoop supergroup 32973 2016-07-23 12:29 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469234255012_0001-1469247921943-hadoop-wc.jar-1469248148068-1-1-SUCCEEDED-default-1469248027901.jhist
-rwxrwx--- 1 hadoop supergroup 347 2016-07-23 12:29 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469234255012_0001.summary
-rwxrwx--- 1 hadoop supergroup 91579 2016-07-23 12:29 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469234255012_0001_conf.xml
-rwxrwx--- 1 hadoop supergroup 32957 2016-07-25 19:45 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469446305412_0001-1469447061251-hadoop-wc.jar-1469447138744-1-1-SUCCEEDED-default-1469447093632.jhist
-rwxrwx--- 1 hadoop supergroup 347 2016-07-25 19:45 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469446305412_0001.summary
-rwxrwx--- 1 hadoop supergroup 91579 2016-07-25 19:45 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469446305412_0001_conf.xml
-rwxrwx--- 1 hadoop supergroup 33003 2016-07-26 20:38 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469500058449_0001-1469536528574-hadoop-flow.jar-1469536711053-1-1-SUCCEEDED-default-1469536621793.jhist
-rwxrwx--- 1 hadoop supergroup 349 2016-07-26 20:38 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469500058449_0001.summary
-rwxrwx--- 1 hadoop supergroup 91594 2016-07-26 20:38 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469500058449_0001_conf.xml
-rwxrwx--- 1 hadoop supergroup 32975 2016-07-27 09:07 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469581296388_0001-1469581609069-hadoop-flow.jar-1469581669098-1-1-SUCCEEDED-default-1469581639942.jhist
-rwxrwx--- 1 hadoop supergroup 349 2016-07-27 09:07 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469581296388_0001.summary
-rwxrwx--- 1 hadoop supergroup 91594 2016-07-27 09:07 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469581296388_0001_conf.xml
-rwxrwx--- 1 hadoop supergroup 32966 2016-07-27 09:13 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469581296388_0002-1469581980369-hadoop-flow.jar-1469582016624-1-1-SUCCEEDED-default-1469581991321.jhist
-rwxrwx--- 1 hadoop supergroup 348 2016-07-27 09:13 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469581296388_0002.summary
-rwxrwx--- 1 hadoop supergroup 91594 2016-07-27 09:13 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469581296388_0002_conf.xml
-rwxrwx--- 1 hadoop supergroup 32947 2016-07-27 09:34 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469581296388_0003-1469583259497-hadoop-flow.jar-1469583283697-1-1-SUCCEEDED-default-1469583266059.jhist
-rwxrwx--- 1 hadoop supergroup 347 2016-07-27 09:34 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469581296388_0003.summary
-rwxrwx--- 1 hadoop supergroup 91594 2016-07-27 09:34 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469581296388_0003_conf.xml
-rwxrwx--- 1 hadoop supergroup 32973 2016-07-27 09:56 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469581296388_0004-1469584535785-hadoop-flow.jar-1469584574236-1-1-SUCCEEDED-default-1469584549659.jhist
-rwxrwx--- 1 hadoop supergroup 347 2016-07-27 09:56 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469581296388_0004.summary
-rwxrwx--- 1 hadoop supergroup 91594 2016-07-27 09:56 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469581296388_0004_conf.xml
-rwxrwx--- 1 hadoop supergroup 32994 2016-07-27 16:51 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469604813941_0001-1469609254627-hadoop-flowSort.jar-1469609480611-1-1-SUCCEEDED-default-1469609373636.jhist
-rwxrwx--- 1 hadoop supergroup 353 2016-07-27 16:51 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469604813941_0001.summary
-rwxrwx--- 1 hadoop supergroup 91630 2016-07-27 16:51 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469604813941_0001_conf.xml
-rwxrwx--- 1 hadoop supergroup 32989 2016-07-27 17:01 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469604813941_0002-1469609990434-hadoop-flowSort.jar-1469610090600-1-1-SUCCEEDED-default-1469610004692.jhist
-rwxrwx--- 1 hadoop supergroup 353 2016-07-27 17:01 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469604813941_0002.summary
-rwxrwx--- 1 hadoop supergroup 91622 2016-07-27 17:01 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469604813941_0002_conf.xml
-rwxrwx--- 1 hadoop supergroup 52581 2016-07-27 22:28 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469628834819_0001-1469629441509-hadoop-flowArea.jar-1469629695512-1-0-FAILED-default-1469629461365.jhist
-rwxrwx--- 1 hadoop supergroup 352 2016-07-27 22:28 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469628834819_0001.summary
-rwxrwx--- 1 hadoop supergroup 91494 2016-07-27 22:28 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469628834819_0001_conf.xml
-rwxrwx--- 1 hadoop supergroup 30548 2016-07-27 22:42 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469628834819_0002-1469629856935-hadoop-flowArea.jar-1469630543551-1-0-FAILED-default-1469630477324.jhist
-rwxrwx--- 1 hadoop supergroup 350 2016-07-27 22:42 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469628834819_0002.summary
-rwxrwx--- 1 hadoop supergroup 91494 2016-07-27 22:42 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469628834819_0002_conf.xml
-rwxrwx--- 1 hadoop supergroup 30560 2016-07-27 22:55 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469628834819_0003-1469630391568-hadoop-flowArea.jar-1469631307275-1-0-FAILED-default-1469631249046.jhist
-rwxrwx--- 1 hadoop supergroup 350 2016-07-27 22:55 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469628834819_0003.summary
-rwxrwx--- 1 hadoop supergroup 91494 2016-07-27 22:55 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469628834819_0003_conf.xml
-rwxrwx--- 1 hadoop supergroup 54558 2016-07-28 09:12 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469667659405_0001-1469668063936-hadoop-flowArea.jar-1469668319036-1-0-FAILED-default-1469668087466.jhist
-rwxrwx--- 1 hadoop supergroup 352 2016-07-28 09:11 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469667659405_0001.summary
-rwxrwx--- 1 hadoop supergroup 91494 2016-07-28 09:12 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469667659405_0001_conf.xml
-rwxrwx--- 1 hadoop supergroup 30329 2016-07-28 09:25 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469667659405_0002-1469669047716-hadoop-flow.jar-1469669116225-1-0-FAILED-default-1469669070963.jhist
-rwxrwx--- 1 hadoop supergroup 346 2016-07-28 09:25 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469667659405_0002.summary
-rwxrwx--- 1 hadoop supergroup 91595 2016-07-28 09:25 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469667659405_0002_conf.xml
-rwxrwx--- 1 hadoop supergroup 30331 2016-07-28 09:38 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469667659405_0003-1469669444122-hadoop-flow.jar-1469669914163-1-0-FAILED-default-1469669867080.jhist
-rwxrwx--- 1 hadoop supergroup 346 2016-07-28 09:38 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469667659405_0003.summary
-rwxrwx--- 1 hadoop supergroup 91595 2016-07-28 09:38 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469667659405_0003_conf.xml
-rwxrwx--- 1 hadoop supergroup 32950 2016-07-28 09:51 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469667659405_0004-1469670210160-hadoop-flow.jar-1469670688549-1-1-SUCCEEDED-default-1469670670491.jhist
-rwxrwx--- 1 hadoop supergroup 347 2016-07-28 09:51 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469667659405_0004.summary
-rwxrwx--- 1 hadoop supergroup 91619 2016-07-28 09:51 /tmp/hadoop-yarn/staging/history/done_intermediate/hadoop/job_1469667659405_0004_conf.xml
[hadoop@weekend110 ~]$
file:/tmp/hadoop-Administrator/mapred/staging/Administrator1242101173/.staging/job_local1242101173_0001/job.xml
job-id : job_local1242101173_0001uber-mode : falsemap-progress : 1.0reduce-progress : 1.0cleanup-progress : 1.0setup-progress : 1.0runstate : SUCCEEDEDstart-time : 0user-name : Administratorpriority : NORMALscheduling-info : NAnum-used-slots0num-reserved-slots0used-mem0reserved-mem0needed-mem0
主题:
主用户: NTUserPrincipal: Administrator
主用户: NTSidUserPrincipal: S-1-5-21-2155837731-1039603112-1552600933-500
主用户: NTDomainPrincipal: WIN-BQOBV63OBNM
主用户: NTSidDomainPrincipal: S-1-5-21-2155837731-1039603112-1552600933
主用户: NTSidPrimaryGroupPrincipal: S-1-5-21-2155837731-1039603112-1552600933-513
主用户: NTSidGroupPrincipal: S-1-1-0
主用户: NTSidGroupPrincipal: S-1-5-114
主用户: NTSidGroupPrincipal: S-1-5-32-544
主用户: NTSidGroupPrincipal: S-1-5-32-545
主用户: NTSidGroupPrincipal: S-1-5-4
主用户: NTSidGroupPrincipal: S-1-2-1
主用户: NTSidGroupPrincipal: S-1-5-11
主用户: NTSidGroupPrincipal: S-1-5-15
主用户: NTSidGroupPrincipal: S-1-5-113
主用户: NTSidGroupPrincipal: S-1-5-5-0-112222
主用户: NTSidGroupPrincipal: S-1-2-0
主用户: NTSidGroupPrincipal: S-1-5-64-10
主用户: NTSidGroupPrincipal: S-1-16-12288
主用户: Administrator
公共身份证明: NTNumericCredential: 2088
专用身份证明: org.apache.hadoop.security.Credentials@77084cb5
以上是weekend110的textinputformat的对切片规划的源码分析
建立索引
看mr程序实现倒排索引
Soga:
之前在分析切片规划的源码分析时，Inputspilt里，我们知道，是包括block信息、文件路径信息、、、
[hadoop@weekend110 ~]$ /home/hadoop/app/hadoop-2.4.1/bin/hadoop jar ii.jar cn.itcast.hadoop.mr.ii.InverseIndexStepOne /ii/data /ii/stepone
为什么可以，因为，
拿这个结果，作为输入
以上是weekend110的倒排索引的mr实现
以下是，多个job在同一个mian方法中提交
总结，不推荐这种哈。当然，在这里是玩玩而已