Michael Smith has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/19863 )

Change subject: PROTOTYPE IMPALA-11941: Support Java 17 in Impala
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Patch Set 16:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/19863/16/fe/src/main/java/org/apache/impala/catalog/local/CatalogdMetaProvider.java
File fe/src/main/java/org/apache/impala/catalog/local/CatalogdMetaProvider.java:

http://gerrit.cloudera.org:8080/#/c/19863/16/fe/src/main/java/org/apache/impala/catalog/local/CatalogdMetaProvider.java@2021
PS16, Line 2021:       } catch (UnsupportedOperationException e) {
> This exception is kind of concerning. I think it's an artifact of building
This comes from a few lambdas stored as class members:

UnsupportedOperationException: can't get field offset on a hidden class: 
private final java.io.FileDescriptor 
sun.nio.ch.NioSocketImpl$$Lambda$98/0x00000008012e4538.arg$1
UnsupportedOperationException: can't get field offset on a hidden class: 
private final org.apache.iceberg.DeleteFileIndex 
org.apache.iceberg.DeleteFileIndex$$Lambda$555/0x0000000801b93c78.arg$1
UnsupportedOperationException: can't get field offset on a hidden class: 
private final org.apache.iceberg.hadoop.SerializableConfiguration 
org.apache.iceberg.hadoop.HadoopFileIO$$Lambda$296/0x0000000801675a60.arg$1

These are outside our control. It's not clear there is a good workaround for 
handling them. This seems like the result of Java 15+ 
(https://github.com/doanduyhai/Achilles/issues/372) changing how lambda capture 
is implemented internally. A little underestimation shouldn't hurt.

However jamm seems to be more active and claims Java 17 support. I'm going to 
try switching to it.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ic378896f572e030a3a019646a96a32a07866a737
Gerrit-Change-Number: 19863
Gerrit-PatchSet: 16
Gerrit-Owner: Michael Smith <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Laszlo Gaal <[email protected]>
Gerrit-Reviewer: Michael Smith <[email protected]>
Gerrit-Comment-Date: Thu, 15 Jun 2023 17:52:57 +0000
Gerrit-HasComments: Yes

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