apache / apache/arrow-java

[JAVA] [arrow-jdbc] Unmapped data type 2014 (TIMESTAMP_WITH_TIMEZONE)

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描述

### Describe the usage question you have. Please include as many useful details as possible.

I have an iceberg table with column type "TIMESTAMP_WITH_TIMEZONE"

When I run my flight_sql jdbc client to query this table, I get below error in my flight sql client code.

```
Exception in thread "Thread-0" java.lang.RuntimeException: java.sql.SQLException: Error while executing SQL "SELECT * FROM datawarehouse.school_data_raw.schools limit 100": Unknown error: java.lang.UnsupportedOperationException: Unmapped JDBC type: 2014
at ai.saal.arrowjdbcclient.ArrowJdbcClient.runQueryOnArrow(ArrowJdbcClient.java:123)
at ai.saal.arrowjdbcclient.ArrowJdbcClient.run(ArrowJdbcClient.java:41)
at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.sql.SQLException: Error while executing SQL "SELECT * FROM datawarehouse.school_data_raw.schools limit 100": Unknown error: java.lang.UnsupportedOperationException: Unmapped JDBC type: 2014
at cfjd.org.apache.calcite.avatica.Helper.createException(Helper.java:56)
at cfjd.org.apache.calcite.avatica.Helper.createException(Helper.java:41)
at cfjd.org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:163)
at cfjd.org.apache.calcite.avatica.AvaticaStatement.executeQuery(AvaticaStatement.java:227)
at ai.saal.arrowjdbcclient.ArrowJdbcClient.runQueryOnArrow(ArrowJdbcClient.java:97)
... 2 more
Caused by: cfjd.org.apache.arrow.flight.FlightRuntimeException: INTERNAL: Unknown error: java.lang.UnsupportedOperationException: Unmapped JDBC type: 2014
at cfjd.org.apache.arrow.flight.CallStatus.toRuntimeException(CallStatus.java:131)
at cfjd.org.apache.arrow.flight.grpc.StatusUtils.fromGrpcRuntimeException(StatusUtils.java:164)
at cfjd.org.apache.arrow.flight.grpc.StatusUtils$1.next(StatusUtils.java:250)
at cfjd.org.apache.arrow.flight.sql.FlightSqlClient$PreparedStatement.(FlightSqlClient.java:941)
at cfjd.org.apache.arrow.flight.sql.FlightSqlClient.prepare(FlightSqlClient.java:728)
at cfjd.org.apache.arrow.flight.sql.FlightSqlClient.prepare(FlightSqlClient.java:708)
at org.apache.arrow.driver.jdbc.client.ArrowFlightSqlClientHandler.prepare(ArrowFlightSqlClientHandler.java:170)
at org.apache.arrow.driver.jdbc.ArrowFlightMetaImpl.prepareAndExecute(ArrowFlightMetaImpl.java:161)
at cfjd.org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:675)
at cfjd.org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:156)
... 4 more
```

Query I am running is **SELECT * FROM datawarehouse.school_data_raw.schools limit 100**

Table structure is :

_CREATE TABLE datawarehouse.school_data_raw.schools ( school_id varchar, school_name varchar, ingested_at timestamp(6) with time zone ) WITH ( format = 'PARQUET', format_version = 1, location = 's3a://data-warehouse/raw/school_data/schools' )_

### Component(s)

Java

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研究方向

首先,追蹤 ArrowFlightMetaImpl.prepareAndExecute 中所示的準備路徑,經過 ArrowFlightSqlClient 以及對 type 2014 的 JDBC 中繼資料處理。針對 TIMESTAMP_WITH_TIMEZONE 欄位重現 SELECT 查詢,並確認該 JDBC type 的預期行為;當查詢不再因 unmapped-type error 失敗,且 coverage 驗證了這一點時,即表示完成。

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評估

技術堆疊
java
領域
databases
Issue 類型
缺陷
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3/5
預估耗時
1-2 天
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停滯
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