SparkSql读取hive表tblproperties异常如何解决
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集群环境
sparksql读取Parquet 格式的hive表报错
hive的parquet表，hive和impala读取正常，使用spark-sql读取则报错
异常信息
com.fasterxml.jackson.core.JsonParseException: Unexpected end-of-input within/between Object entriesat [Source: (String)"{"type":"struct","fields":[{"name":"timestamp","type":"string","nullable":true,"metadata":{"HIVE_TYPE_STRING":"string"}},{"name":"xxx","type":"string","nullable":true,"metadata":{"HIVE_TYPE_STRING":"string"}},{"name":"xxx","type":"string","nullable":true,"; line: 1, column: 513]at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1804)at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._skipAfterComma2(ReaderBasedJsonParser.java:2323)at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._skipComma(ReaderBasedJsonParser.java:2293)at com.fasterxml.jackson.core.json.ReaderBasedJsonParser.nextToken(ReaderBasedJsonParser.java:664)at org.json4s.jackson.JValueDeserializer.deserialize(JValueDeserializer.scala:47)at org.json4s.jackson.JValueDeserializer.deserialize(JValueDeserializer.scala:39)at org.json4s.jackson.JValueDeserializer.deserialize(JValueDeserializer.scala:32)at org.json4s.jackson.JValueDeserializer.deserialize(JValueDeserializer.scala:46)at org.json4s.jackson.JValueDeserializer.deserialize(JValueDeserializer.scala:39)at com.fasterxml.jackson.databind.ObjectReader._bindAndClose(ObjectReader.java:1611)at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:1219)at org.json4s.jackson.JsonMethods$class.parse(JsonMethods.scala:25)at org.json4s.jackson.JsonMethods$.parse(JsonMethods.scala:55)at org.apache.spark.sql.types.DataType$.fromJson(DataType.scala:127)at org.apache.spark.sql.hive.HiveExternalCatalog$.org$apache$spark$sql$hive$HiveExternalCatalog$$getSchemaFromTableProperties(HiveExternalCatalog.scala:1382)at org.apache.spark.sql.hive.HiveExternalCatalog.restoreDataSourceTable(HiveExternalCatalog.scala:845)at org.apache.spark.sql.hive.HiveExternalCatalog.org$apache$spark$sql$hive$HiveExternalCatalog$$restoreTableMetadata(HiveExternalCatalog.scala:765)at org.apache.spark.sql.hive.HiveExternalCatalog$$anonfun$getTable$1.apply(HiveExternalCatalog.scala:734)at org.apache.spark.sql.hive.HiveExternalCatalog$$anonfun$getTable$1.apply(HiveExternalCatalog.scala:734) tblproperites不全的问题，应该是hive存储tblproperites的表，参数字段存在截断，因此找到metastore库中的TABLE_PARAMS表，检查PARAM_VALUE字段，发现该字段的长度仅为256，找到问题
将PARAM_VALUE的长度修改为8000，问题解决
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