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Added exception handler for REST catalog initialization to print error #95

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Added exception handler for REST catalog initialization to print error #95

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@subkanthi subkanthi commented Jan 22, 2026

closes: #92

@subkanthi subkanthi linked an issue Jan 22, 2026 that may be closed by this pull request
need a user friendly message if the response from rest catalog cannot be parsed. #92
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@subkanthi subkanthi requested a review from xieandrew January 22, 2026 20:41
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subkanthi commented Jan 22, 2026 

(devbox) kanthi@Kanthis-MacBook-Pro scratch % java -jar ../../ice/target/ice-0.0.0-SNAPSHOT-shaded.jar insert nyc.taxis2 -p https://d37ci6vzurychx.cloudfront.net/trip-data/yellow_tripdata_2025-01.parquet
2026-01-22 14:33:35 [main] WARN o.a.i.rest.ErrorHandlers > Unable to parse error response
java.io.UncheckedIOException: com.fasterxml.jackson.databind.exc.MismatchedInputException: No content to map due to end-of-input
 at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1]
	at org.apache.iceberg.util.JsonUtil.parse(JsonUtil.java:106)
	at org.apache.iceberg.rest.responses.ErrorResponseParser.fromJson(ErrorResponseParser.java:71)
	at org.apache.iceberg.rest.ErrorHandlers$DefaultErrorHandler.parseResponse(ErrorHandlers.java:194)
	at org.apache.iceberg.rest.HTTPClient.throwFailure(HTTPClient.java:195)
	at org.apache.iceberg.rest.HTTPClient.execute(HTTPClient.java:309)
	at org.apache.iceberg.rest.BaseHTTPClient.get(BaseHTTPClient.java:77)
	at org.apache.iceberg.rest.RESTSessionCatalog.fetchConfig(RESTSessionCatalog.java:1089)
	at org.apache.iceberg.rest.RESTSessionCatalog.initialize(RESTSessionCatalog.java:261)
	at org.apache.iceberg.rest.RESTCatalog.initialize(RESTCatalog.java:78)
	at com.altinity.ice.cli.Main.loadCatalog(Main.java:680)
	at com.altinity.ice.cli.Main.loadCatalog(Main.java:631)
	at com.altinity.ice.cli.Main.insert(Main.java:382)
	at com.altinity.ice.cli.Main.lambda$1(Main.java:705) [9 skipped]
	at com.altinity.ice.cli.Main.main(Main.java:712) [1 skipped]
Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: No content to map due to end-of-input
 at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1]
	at org.apache.iceberg.util.JsonUtil.parse(JsonUtil.java:104) [5 skipped]
	at org.apache.iceberg.rest.responses.ErrorResponseParser.fromJson(ErrorResponseParser.java:71)
	at org.apache.iceberg.rest.ErrorHandlers$DefaultErrorHandler.parseResponse(ErrorHandlers.java:194)
	at org.apache.iceberg.rest.HTTPClient.throwFailure(HTTPClient.java:195)
	at org.apache.iceberg.rest.HTTPClient.execute(HTTPClient.java:309)
	at org.apache.iceberg.rest.BaseHTTPClient.get(BaseHTTPClient.java:77)
	... 23 common frames omitted
2026-01-22 14:33:35 [main] ERROR com.altinity.ice.cli.Main > Fatal
java.lang.RuntimeException: Failed to connect to REST catalog at 'http://localhost:5001'. Please check that the catalog server is running and the URL is correct. Configure via: .ice.yaml 'uri' field, ICE_URI env var, or --config flag.
	at com.altinity.ice.cli.Main.loadCatalog(Main.java:682)
	at com.altinity.ice.cli.Main.loadCatalog(Main.java:631)
	at com.altinity.ice.cli.Main.insert(Main.java:382)
	at com.altinity.ice.cli.Main.lambda$1(Main.java:705) [9 skipped]
	at com.altinity.ice.cli.Main.main(Main.java:712) [1 skipped]
Caused by: org.apache.iceberg.exceptions.RESTException: Unable to process: 
	at org.apache.iceberg.rest.ErrorHandlers$DefaultErrorHandler.accept(ErrorHandlers.java:224)
	at org.apache.iceberg.rest.ErrorHandlers$DefaultErrorHandler.accept(ErrorHandlers.java:188)
	at org.apache.iceberg.rest.HTTPClient.throwFailure(HTTPClient.java:225)
	at org.apache.iceberg.rest.HTTPClient.execute(HTTPClient.java:309)
	at org.apache.iceberg.rest.BaseHTTPClient.get(BaseHTTPClient.java:77)
	at org.apache.iceberg.rest.RESTSessionCatalog.fetchConfig(RESTSessionCatalog.java:1089)
	at org.apache.iceberg.rest.RESTSessionCatalog.initialize(RESTSessionCatalog.java:261)
	at org.apache.iceberg.rest.RESTCatalog.initialize(RESTCatalog.java:78)
	at com.altinity.ice.cli.Main.loadCatalog(Main.java:680)
	... 14 common frames omitted

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need a user friendly message if the response from rest catalog cannot be parsed.

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@subkanthi