nastra commented on code in PR #6338:
URL: https://github.com/apache/iceberg/pull/6338#discussion_r1037875766
##########
core/src/main/java/org/apache/iceberg/jdbc/JdbcUtil.java:
##########
@@ -72,9 +72,9 @@ final class JdbcUtil {
+ TABLE_NAME
+ " VARCHAR(255) NOT NULL,"
+ METADATA_LOCATION
- + " VARCHAR(5500),"
+ + " VARCHAR(1000),"
Review Comment:
I've rerun some testing today to verify my findings from yesterday when
making this PR. It turns out adjusting `NAMESPACE_PROPERTY_KEY` from 5500 to
255 was the only thing that was necessary. I was mislead by the stack trace
```
at
com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1903)
at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1242)
at
org.apache.iceberg.jdbc.JdbcCatalog.lambda$initializeCatalogTables$1(JdbcCatalog.java:152)
at org.apache.iceberg.ClientPoolImpl.run(ClientPoolImpl.java:58)
at org.apache.iceberg.ClientPoolImpl.run(ClientPoolImpl.java:51)
at
org.apache.iceberg.jdbc.JdbcCatalog.initializeCatalogTables(JdbcCatalog.java:135)
at org.apache.iceberg.jdbc.JdbcCatalog.initialize(JdbcCatalog.java:103)
... 87 more
org.apache.iceberg.jdbc.UncheckedSQLException: Cannot initialize JDBC catalog
at org.apache.iceberg.jdbc.JdbcCatalog.initialize(JdbcCatalog.java:109)
at org.apache.iceberg.CatalogUtil.loadCatalog(CatalogUtil.java:212)
```
thinking that `JdbcCatalog.initializeCatalogTables(JdbcCatalog.java:135)`
is affecting the
[CREATE_TABLE_STATEMENT](https://github.com/apache/iceberg/blob/383d9caec804293e27b23b50c2cd89168346a848/core/src/main/java/org/apache/iceberg/jdbc/JdbcCatalog.java#L135)
while the issue was in all 3 issues the `CREATE_NAMESPACE_PROPERTIES_TABLE`
stmt.
So should we restore those varchars from 1000 back to 5500?
`Although InnoDB supports row sizes larger than 65,535 bytes internally,
MySQL itself imposes a row-size limit of 65,535 for the combined size of all
columns` <-- we could also try and set them to a higher value by calculating
(65535 - (255 * 3)) / 2 (metadata_location + previous_metadata_location). But
if we ever add another column, we'd have to re-calculate that.
To your second question around truncation. If a value is truncated, then
there will be an exception: `Data truncation: Data too long for column
'metadata_location' at row 1`
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