apache配置单元为druid摄取的数据源提供null

emeijp43  于 2021-06-27  发布在  Hive
关注(0)|答案(2)|浏览(434)

我已经通过使用csv在druid中创建了我的数据源
例如:关于数据:

"2015-09-12T00:47:00.496Z",100134,33,21,30505,43285,U,67c38115-1a68-45bb-858d-dd6cdeaab5cb,
"2015-09-12T00:47:00.496Z",100082,6,26,31548,43202,U,a4f8708a-30ac-4637-910c-e8f9386d6353,

数据是通过druid中的以下json:indexcsv.json消耗的

{
  "type" : "index_hadoop",
  "spec" : {
    "ioConfig" : {
      "type" : "hadoop",
      "inputSpec" : {
        "type" : "static",
        "paths" : "/opt/druid-0.12.3/npmData/example.csv"
      }
    },
    "dataSchema" : {
      "dataSource" : "example",
      "granularitySpec" : {
        "type" : "uniform",
        "segmentGranularity" : "day",
        "queryGranularity" : "none",
        "intervals" : ["2010-09-12/2018-09-13"]
      },
      "parser" : {
        "type" : "hadoopyString",
        "parseSpec": {
    "format" : "csv",
    "timestampSpec" : {
      "column" : "timestamp"
    },
    "columns" : ["timestamp","IId","QId","Score","StartOffsetInMs","EndOffsetInMs","SpeakerRole","QueryIdentity","SId"],
    "dimensionsSpec" : {
      "dimensions" : ["IId","QId","SpeakerRole","QueryIdentity","SId"]
    }
  }
      },
      "metricsSpec" : [
        {
          "name" : "count",
          "type" : "count"
        }
      ]
    },
    "tuningConfig" : {
      "type" : "hadoop",
      "partitionsSpec" : {
        "type" : "hashed",
        "targetPartitionSize" : 5000000
      },
      "jobProperties" : {}
    }
  }
}

我可以在Druid身上看到这些数据。如:

[root@ENT-CL-015243 druid-0.12.3]# curl -X 'POST' -H 'Content-Type:application/json' -d @customJsons/groupby-sql.json http://localhost:8082/druid/v2/sql
[{"IId":"1","QId":"26","QueryIdentity":"c5b7d739-a531-409e-afd1-fb294846560a","SpeakerRole":"U","__time":"2015-09-12T00:47:00.496Z","count":1},
{"IId":"1","QId":"30","QueryIdentity":"ba8bb5f5-36e4-41ee-b74c-536b50aa979a","SpeakerRole":"U","__time":"2015-09-12T00:47:00.496Z","count":1},

为了在配置单元中查询此数据,我遵循了以下步骤:
https://cwiki.apache.org/confluence/display/hive/druid+integration#druidintegration-查询完全执行Druid
我打开hive bash并运行以下查询:

hive>CREATE EXTERNAL TABLE wikipedia
STORED BY 'org.apache.hadoop.hive.druid.DruidStorageHandler'
TBLPROPERTIES ("druid.datasource" ="example");

hive>  DESCRIBE FORMATTED example;
OK

# col_name              data_type               comment

iid           string                  from deserializer
qid                 string                  from deserializer
queryidentity           string                  from deserializer
speakerrole             string                  from deserializer
__time                  timestamp with local time zone  from deserializer
count                   bigint                  from deserializer

# Detailed Table Information

Database:               default
OwnerType:              USER
Owner:                  root
CreateTime:             Thu Nov 08 13:18:14 IST 2018
LastAccessTime:         UNKNOWN
Retention:              0
Location:               hdfs://localhost:9000/user/hive/warehouse/example
Table Type:             EXTERNAL_TABLE
Table Parameters:
COLUMN_STATS_ACCURATE   {\"BASIC_STATS\":\"true\",\"COLUMN_STATS\":{\"__time\":\"true\",\"count\":\"true\",\"iid\":\"true\",\"qid\":\"true\",\"queryidentity\":\"true\",\"speakerrole\":\"true\"}}
EXTERNAL                TRUE
bucketing_version       2
druid.datasource        example
numFiles                0
numRows                 0
rawDataSize             0
storage_handler         org.apache.hadoop.hive.druid.DruidStorageHandler
totalSize               0
transient_lastDdlTime   1541675894

# Storage Information

SerDe Library:          org.apache.hadoop.hive.druid.serde.DruidSerDe
InputFormat:            null
OutputFormat:           null
Compressed:             No
Num Buckets:            -1
Bucket Columns:         []
Sort Columns:           []
Storage Desc Params:
        serialization.format    1
Time taken: 0.288 seconds, Fetched: 39 row(s)

hive> SELECT * FROM example LIMIT 10;
OK
NULL    NULL    NULL    NULL    2015-09-12 03:47:00.496 Asia/Jerusalem  1
NULL    NULL    NULL    NULL    2015-09-12 03:47:00.496 Asia/Jerusalem  1
NULL    NULL    NULL    NULL    2015-09-12 03:47:00.496 Asia/Jerusalem  1
NULL    NULL    NULL    NULL    2015-09-12 03:47:00.496 Asia/Jerusalem  1
NULL    NULL    NULL    NULL    2015-09-12 03:47:00.496 Asia/Jerusalem  1
NULL    NULL    NULL    NULL    2015-09-12 03:47:00.496 Asia/Jerusalem  1
NULL    NULL    NULL    NULL    2015-09-12 03:47:00.496 Asia/Jerusalem  1
NULL    NULL    NULL    NULL    2015-09-12 03:47:00.496 Asia/Jerusalem  1
NULL    NULL    NULL    NULL    2015-09-12 03:47:00.496 Asia/Jerusalem  1
NULL    NULL    NULL    NULL    2015-09-12 03:47:00.496 Asia/Jerusalem  1
Time taken: 0.104 seconds, Fetched: 10 row(s)

如您所见,所有列的值都为null。我可以猜这是一些相关的输入格式在某个地方可以有人请帮助这一点。

ylamdve6

ylamdve61#

您可以检查是否配置了以下属性:
hive.druid.broker.address.default:myip:8082
hive.druid.coordinator.address.default:myip:8081
hive.druid.http.numconnection:20
hive.druid.http.read.timeout:pt10m
hive.druid.indexer.memory.rownum.max:75000个
hive.druid.indexer.partition.size.max:1000000
hive.druid.indexer.segments.granularity:天
hive.druid.metadata.base:Druid
hive.druid.metadata.db.type:mysql
hive.druid.metadata.password:Druid
hive.druid.metadata.uri:jdbc:mysql://myip:3306/druid
hive.druid.metadata.username:Druid
hive.druid.storage.storagedirectory:/apps/hive/warehouse
hive.druid.working.directory:/tmp/druid索引

ccrfmcuu

ccrfmcuu2#

druid中的列名区分大小写,而hive中的列名不区分大小写。用小写的Druid来重命名你的列名,这样就可以了。

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