我的同事在用avro serde创建配置单元表时出错。下面是他尝试的代码，结果出错了。

DROP TABLE IF EXISTS twitter;
    CREATE TABLE twitter
    ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.avro.AvroSerDe'
    STORED AS INPUTFORMAT 'org.apache.hadoop.hive.ql.io.avro.AvroContainerInputFormat'
    OUTPUTFORMAT 'org.apache.hadoop.hive.ql.io.avro.AvroContainerOutputFormat'
    TBLPROPERTIES ('avro.schema.literal'='{
    "type" : "record",
    "name" : "twitter_schema",
    "namespace" : "com.miguno.avro",
    "fields" : [ {
    "name" : "username",
    "type" : "string",
    "doc" : "Name of the user account on Twitter.com"},
    {"name" : "tweet",
    "type" : "string",
    "doc" : "The content of the user's Twitter message"},  
    {"name" : "timestamp",
     "type" : "long",
     "doc" : "Unix epoch time in seconds"}
     ],"doc:" : "A basic schema for storing Twitter messages"}');

后来我发现第17行中的撇号“'”引起了这个问题。

"doc" : "The content of the user's Twitter message"},

在上面的一行中，doc注解包含了一个带有撇号的单词。我把它取了下来，效果很好。