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https://issues.apache.org/jira/browse/DRILL-4456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16679928#comment-16679928
]
ASF GitHub Bot commented on DRILL-4456:
---------------------------------------
vdiravka commented on a change in pull request #1527: DRILL-4456: Fix Hive
translate UDF
URL: https://github.com/apache/drill/pull/1527#discussion_r231943055
##########
File path:
contrib/storage-hive/core/src/main/java/org/apache/drill/exec/expr/fn/HiveFunctionRegistry.java
##########
@@ -48,8 +52,17 @@
import
org.apache.drill.shaded.guava.com.google.common.collect.ArrayListMultimap;
import org.apache.drill.shaded.guava.com.google.common.collect.Sets;
-public class HiveFunctionRegistry implements PluggableFunctionRegistry{
- static final org.slf4j.Logger logger =
org.slf4j.LoggerFactory.getLogger(HiveFunctionRegistry.class);
+public class HiveFunctionRegistry implements PluggableFunctionRegistry {
+ private static final org.slf4j.Logger logger =
org.slf4j.LoggerFactory.getLogger(HiveFunctionRegistry.class);
+
+ /**
+ * Map for renaming Hive UDFs whose names satisfy the predicate in the key
by names from the map value.
+ */
+ private static final Map<Predicate<String[]>, String[]> FUNCTION_REPLACE_MAP
= ImmutableMap.<Predicate<String[]>, String[]> builder()
Review comment:
@vvysotskyi Try to simplify the logic for `FUNCTION_REPLACE_MAP`. Possibly
try to get rid from `String[]` (you can add all function names to this Map), so
in result it can be similar to
https://github.com/apache/drill/blob/master/logical/src/main/java/org/apache/drill/common/expression/fn/FunctionReplacementUtils.java#L42
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> Hive translate function is not working
> --------------------------------------
>
> Key: DRILL-4456
> URL: https://issues.apache.org/jira/browse/DRILL-4456
> Project: Apache Drill
> Issue Type: Improvement
> Components: Functions - Hive
> Affects Versions: 1.5.0
> Reporter: Arina Ielchiieva
> Assignee: Volodymyr Vysotskyi
> Priority: Major
> Fix For: 1.15.0
>
>
> In Hive "select translate(name, 'A', 'B') from users" works fine.
> But in Drill "select translate(name, 'A', 'B') from hive.`users`" returns the
> following error:
> org.apache.drill.common.exceptions.UserRemoteException: PARSE ERROR:
> Encountered "," at line 1, column 22. Was expecting one of: "USING" ... "NOT"
> ... "IN" ... "BETWEEN" ... "LIKE" ... "SIMILAR" ... "=" ... ">" ... "<" ...
> "<=" ... ">=" ... "<>" ... "+" ... "-" ... "*" ... "/" ... "||" ... "AND" ...
> "OR" ... "IS" ... "MEMBER" ... "SUBMULTISET" ... "MULTISET" ... "[" ... "."
> ... "(" ... while parsing SQL query: select translate(name, 'A', 'B') from
> hive.users ^ [Error Id: ba21956b-3285-4544-b3b2-fab68b95be1f on
> localhost:31010]
> Root cause:
> Calcite follows the standard SQL reference.
> SQL reference, ISO/IEC 9075-2:2011(E), section 6.30
> <character transliteration> ::=
> TRANSLATE <left paren> <character value expression>
> USING <transliteration name> <right paren>
> To fix:
> 1. add support to translate (expession, from_string, to_string) alternative
> syntax
> 2. add unit test in org.apache.drill.exec.fn.hive.TestInbuiltHiveUDFs
> Changes can be made directly in Calcite and then upgrade to appropriate
> Calcite version.
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