背景知识见链接：elasticsearch备份与恢复3_使用ES-Hadoop将HDFS数据写入Elasticsearch中

项目参考《Elasticsearch集成Hadoop最佳实践》的tweets2HdfsMapper项目

项目源码：https://gitee.com/constfafa/ESToHDFS.git

开发过程：

1. 先在kibana中查看下索引的信息

1.  
   "hits": [
2.  
   {
3.  
   "_index": "xxx-words",
4.  
   "_type": "history",
5.  
   "_id": "zankHWUBk5wX4tbY-gpZ",
6.  
   "_score": 1,
7.  
   "_source": {
8.  
   "word": "abc",
9.  
   "createTime": "2018-08-09 16:56:00",
10.  
    "userId": "263",
11.  
    "datetime": "2018-08-09T16:56:00Z"
12.  
    }
13.  
    },
14.  
    {
15.  
    "_index": "xxx-words",
16.  
    "_type": "history",
17.  
    "_id": "zqntHWUBk5wX4tbYFAqy",
18.  
    "_score": 1,
19.  
    "_source": {
20.  
    "word": "bcd",
21.  
    "createTime": "2018-08-09 16:59:00",
22.  
    "userId": "263",
23.  
    "datetime": "2018-08-09T16:59:00Z"
24.  
    }
25.  
    }
26.  
    ]

之后直接执行 hadoop jar history2hdfs-job.jar

执行过程如下

1.  
   [root@docker02 jar]# hadoop jar history2hdfs-job.jar
2.  
   18/06/07 04:04:36 WARN util.www.leyouzaixan.cn NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
3.  
   18/06/07 04:04:42 INFO client.RMProxy: Connecting to ResourceManager at /192.168.211.104:8032
4.  
   18/06/07 04:04:48 WARN mapreduce.JobResourceUploader: Hadoop command-line option parsing not performed. Implement the Tool interface and execute your application with ToolRunner to remedy this.
5.  
   18/06/07 04:04:55 INFO util.Version: Elasticsearch Hadoop v6.2.3 [039a45c5a1]
6.  
   18/06/07 04:04:58 INFO mr.EsInputFormat: Reading from [hzeg-history-words/history]
7.  
   18/06/07 04:04:58 INFO mr.EsInputFormat: Created [2] splits
8.  
   18/06/07 04:05:00 INFO mapreduce.JobSubmitter: number of splits:2
9.  
   18/06/07 04:05:02 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1528305729734_0007
10.  
    18/06/07 04:05:05 INFO impl.YarnClientImpl: Submitted application application_1528305729734_0007
11.  
    18/06/07 04:05:06 INFO mapreduce.Job: The url to track the job: http://docker02:8088/proxy/application_1528305729734_0007/
12.  
    18/06/07 04:05:06 INFO mapreduce.Job: Running job: job_1528305729734_0007
13.  
    18/06/07 04:09:31 INFO mapreduce.Job: Job job_1528305729734_0007 running in uber mode : false
14.  
    18/06/07 04:09:42 INFO mapreduce.Job: map 0% reduce 0%
15.  
    18/06/07 04:15:36 INFO mapreduce.Job: map 100% reduce 0%
16.  
    18/06/07 04:17:26 INFO mapreduce.Job: Job job_1528305729734_0007 completed successfully
17.  
    18/06/07 04:17:56 INFO mapreduce.Job: Counters: 47
18.  
    File System Counters
19.  
    FILE: Number of bytes read=0
20.  
    FILE: Number of bytes written=230906
21.  
    FILE: Number of read operations=0
22.  
    FILE: Number of large read operations=0
23.  
    FILE: Number of write operations=0
24.  
    HDFS: Number

    of bytes read=74694
25.  
    HDFS: Number

    of bytes written=222
26.  
    HDFS: Number

    of read operations=8
27.  
    HDFS: Number

    of large read operations=0
28.  
    HDFS: Number

    of write operations=4
29.  
    Job Counters
30.  
    Launched map tasks=

    2
31.  
    Rack-

    local map tasks=2
32.  
    Total time spent by all maps

    in occupied slots (ms)=791952
33.  
    Total time spent by all reduces

    in occupied slots (ms)=0
34.  
    Total time spent by all map tasks (ms)=

    791952
35.  
    Total vcore-seconds taken by all map tasks=

    791952
36.  
    Total megabyte-seconds taken by all map tasks=

    810958848
37.  
    Map-Reduce Framework
38.  
    Map input records=

    2
39.  
    Map output records=

    2
40.  
    Input split bytes=

    74694
41.  
    Spilled Records=

    0
42.  
    Failed Shuffles=

    0
43.  
    Merged Map outputs=

    0
44.  
    GC time elapsed (ms)=

    8106
45.  
    CPU time spent (ms)=

    20240
46.  
    Physical memory (bytes) snapshot=

    198356992
47.  
    Virtual memory (bytes) snapshot=4128448512
48.  
    Total committed heap usage (bytes)=

    32157696
49.  
    File Input Format Counters
50.  
    Bytes

    Read=0
51.  
    File Output Format Counters
52.  
    Bytes Written=

    222
53.  
    Elasticsearch Hadoop Counters
54.  
    Bulk Retries=

    0
55.  
    Bulk Retries Total Time(ms)=

    0
56.  
    Bulk Total=

    0
57.  
    Bulk Total Time(ms)=

    0
58.  
    Bytes Accepted=

    0
59.  
    Bytes Received=

    1102
60.  
    Bytes Retried=

    0
61.  
    Bytes Sent=

    296
62.  
    Documents Accepted=

    0
63.  
    Documents Received=

    0
64.  
    Documents Retried=

    0
65.  
    Documents Sent=

    0
66.  
    Network Retries=

    0
67.  
    Network Total Time(ms)=

    5973
68.  
    Node Retries=

    0
69.  
    Scroll Total=

    1
70.  
    Scroll Total Time(ms)=

    666

后面仍旧报job history server找不到，并不影响

执行下面语句检查文件及数据是否正确

可以看到，最终实现了将索引文件存入HDFS的功能

自己在实际使用中遇到了下面的几个问题

1. spring boot gradle项目为了使用此功能，加入如下依赖后，

1.  
   compile group:

   'org.apache.hadoop', name: 'hadoop-core', version: '1.2.1'
2.  
   compile group:

   'org.apache.hadoop', name: 'hadoop-hdfs', version: '2.7.2'
3.  
   compile group:

   'org.elasticsearch', name: 'elasticsearch-hadoop', version: '6.2.4'

发现spring boot启动报错A child container failed during start

查看gradle dependency

其中hadoop-core:1.2.1

1.  
   +

   --- org.apache.hadoop:hadoop-core:1.2.1
2.  
   | +

   --- commons-cli:commons-cli:1.2
3.  
   | +

   --- xmlenc:xmlenc:0.52
4.  
   | +

   --- com.sun.jersey:jersey-core:1.8 -> 1.9
5.  
   | +

   --- com.sun.jersey:jersey-json:1.8
6.  
   | | +

   --- org.codehaus.jettison:jettison:1.1
7.  
   | | | \

   --- stax:stax-api:1.0.1
8.  
   | | +

   --- com.sun.xml.bind:jaxb-www.fengshen157.com/ impl:2.2.3-1
9.  
   | | | \

   --- javax.xml.bind:jaxb-api:2.2.2 -> 2.3.0
10.  
    | | +

    --- org.codehaus.jackson:jackson-core-asl:1.7.1 -> 1.9.13
11.  
    | | +

    --- org.codehaus.jackson:jackson-mapper-asl:1.7.1 -> 1.9.13
12.  
    | | | \

    --- org.codehaus.jackson:jackson-core-asl:1.9.13
13.  
    | | +

    --- org.codehaus.jackson:jackson-www.yongshiyule178.com jaxrs:1.7.1
14.  
    | | | +

    --- org.codehaus.jackson:jackson-core-asl:1.7.1 -> 1.9.13
15.  
    | | | \

    --- org.codehaus.jackson:jackson-www.mhylpt.com mapper-asl:1.7.1 -> 1.9.13 (*)
16.  
    | | +

    --- org.codehaus.jackson:jackson-xc:1.7.1
17.  
    | | | +

    --- org.codehaus.jackson:jackson-www.dasheng178.com  core-asl:1.7.1 -> 1.9.13
18.  
    | | | \

    --- org.codehaus.jackson:jackson-www.taohuayuan178.com mapper-asl:1.7.1 -> 1.9.13 (*)
19.  
    | | \

    --- com.www.tianjiuyule178.com sun.jersey:jersey-core:1.8 -> 1.9
20.  
    | +

    --- com.sun.jersey: www.thd540.com jersey-server:1.8 -> 1.9
21.  
    | | +

    --- asm:asm:3.1
22.  
    | | \

    --- com.sun.jersey:jersey-core:1.9
23.  
    | +

    --- commons-io:commons-io:2.1 -> 2.4
24.  
    | +

    --- commons-httpclient:commons-httpclient:3.0.1 -> 3.1
25.  
    | | +

    --- commons-logging:commons-logging:1.0.4 -> 1.2
26.  
    | | \

    --- commons-codec:commons-codec:1.2 -> 1.11
27.  
    | +

    --- commons-codec:commons-codec:1.4 -> 1.11
28.  
    | +

    --- org.apache.commons:commons-math:2.1
29.  
    | +

    --- commons-configuration:commons-configuration:1.6
30.  
    | | +

    --- commons-collections:commons-collections:3.2.1
31.  
    | | +

    --- commons-lang:commons-lang:2.4 -> 2.6
32.  
    | | +

    --- commons-logging:commons-logging:1.1.1 -> 1.2
33.  
    | | +

    --- commons-digester:commons-digester:1.8
34.  
    | | | +

    --- commons-beanutils:commons-beanutils:1.7.0 (*)
35.  
    | | | \

    --- commons-logging:commons-logging:1.1 -> 1.2
36.  
    | | \

    --- commons-beanutils:commons-beanutils-core:1.8.0
37.  
    | | \

    --- commons-logging:commons-logging:1.1.1 -> 1.2
38.  
    | +

    --- commons-net:commons-net:1.4.1
39.  
    | | \

    --- oro:oro:2.0.8
40.  
    | +

    --- org.mortbay.jetty:jetty:6.1.26
41.  
    | | +

    --- org.mortbay.jetty:jetty-util:6.1.26
42.  
    | | \

    --- org.mortbay.jetty:servlet-api:2.5-20081211
43.  
    | +

    --- org.mortbay.jetty:jetty-util:6.1.26
44.  
    | +

    --- tomcat:jasper-runtime:5.5.12
45.  
    | +

    --- tomcat:jasper-compiler:5.5.12
46.  
    | +

    --- org.mortbay.jetty:jsp-api-2.1:6.1.14
47.  
    | | \

    --- org.mortbay.jetty:servlet-api-2.5:6.1.14
48.  
    | +

    --- org.mortbay.jetty:jsp-2.1:6.1.14
49.  
    | | +

    --- org.eclipse.jdt:core:3.1.1
50.  
    | | +

    --- org.mortbay.jetty:jsp-api-2.1:6.1.14 (*)
51.  
    | | \

    --- ant:ant:1.6.5
52.  
    | +

    --- commons-el:commons-el:1.0
53.  
    | | \

    --- commons-logging:commons-logging:1.0.3 -> 1.2
54.  
    | +

    --- net.java.dev.jets3t:jets3t:0.6.1
55.  
    | | +

    --- commons-codec:commons-codec:1.3 -> 1.11
56.  
    | | +

    --- commons-logging:commons-logging:1.1.1 -> 1.2
57.  
    | | \

    --- commons-httpclient:commons-httpclient:3.1 (*)
58.  
    | +

    --- hsqldb:hsqldb:1.8.0.10
59.  
    | +

    --- oro:oro:2.0.8
60.  
    | +

    --- org.eclipse.jdt:core:3.1.1
61.  
    | \

    --- org.codehaus.jackson:jackson-mapper-asl:1.8.8 -> 1.9.13 (*)

hadoop-hdfs:2.7.1

1.  
   +

   --- org.apache.hadoop:hadoop-hdfs:2.7.1
2.  
   | +

   --- com.google.guava:guava:11.0.2 -> 18.0
3.  
   | +

   --- org.mortbay.jetty:jetty:6.1.26 (*)
4.  
   | +

   --- org.mortbay.jetty:jetty-util:6.1.26
5.  
   | +

   --- com.sun.jersey:jersey-core:1.9
6.  
   | +

   --- com.sun.jersey:jersey-server:1.9 (*)
7.  
   | +

   --- commons-cli:commons-cli:1.2
8.  
   | +

   --- commons-codec:commons-codec:1.4 -> 1.11
9.  
   | +

   --- commons-io:commons-io:2.4
10.  
    | +

    --- commons-lang:commons-lang:2.6
11.  
    | +

    --- commons-logging:commons-logging:1.1.3 -> 1.2
12.  
    | +

    --- commons-daemon:commons-daemon:1.0.13
13.  
    | +

    --- log4j:log4j:1.2.17
14.  
    | +

    --- com.google.protobuf:protobuf-java:2.5.0
15.  
    | +

    --- javax.servlet:servlet-api:2.5
16.  
    | +

    --- org.codehaus.jackson:jackson-core-asl:1.9.13
17.  
    | +

    --- org.codehaus.jackson:jackson-mapper-asl:1.9.13 (*)
18.  
    | +

    --- xmlenc:xmlenc:0.52
19.  
    | +

    --- io.netty:netty-all:4.0.23.Final -> 4.1.22.Final
20.  
    | +

    --- xerces:xercesImpl:2.9.1
21.  
    | | \

    --- xml-apis:xml-apis:1.3.04 -> 1.4.01
22.  
    | +

    --- org.apache.htrace:htrace-core:3.1.0-incubating
23.  
    | \

    --- org.fusesource.leveldbjni:leveldbjni-all:1.8

原因：

发现其都是要依赖servlet-api-2.5的，而springboot要依赖于servlet3以及更高版本，

解决方案：

要exclude servlet-api-2.5

在build.gradle中配置

1.  
   configurations{
2.  
   all*.exclude

   group:'javax.servlet'
3.  
   }

参考：

java - SpringBoot Catalina LifeCycle Exception - Stack Overflow

解决gradle管理依赖中 出现servlet-api.jar冲突的问题。 - CSDN博客

2. 使用的hadoop hdfs的版本是2.7.2，当es向hdfs中写入数据时报错：

1.  
   ERROR security.UserGroupInformation: PriviledgedActionException as:root cause:org.apache.hadoop.ipc.RemoteException: Server IPC version 9 cannot communicate with client version 4
2.  
   org.apache.hadoop.ipc.RemoteException: Server IPC version 9 cannot communicate with client version 4

原因：

hadoop-core 1.2.1太老了，不支持2.7.2了

所以解决办法是：

修改依赖

1.  
   compile group:

   'org.apache.hadoop', name: 'hadoop-common', version: '2.7.2'
2.  
   compile group:

   'org.apache.hadoop', name: 'hadoop-mapreduce-client-core', version: '2.7.2'
3.  
   compile group:

   'org.apache.hadoop', name: 'hadoop-client', version: '2.7.2'
4.  
   compile group:

   'org.apache.hadoop', name: 'hadoop-hdfs', version: '2.7.2'
5.  
   compile group:

   'org.elasticsearch', name: 'elasticsearch-hadoop', version: '6.2.4'

参考：

intellij的maven工程"Server IPC version 9 cannot communicate with client version"错误的解决办法 -