Re: About schema evolution with time travel.

2020-12-14 Thread Tianyi Wang
Hi Wing Yew, Thanks for the pointer to the PR. That's what I was looking for. I will watch #1508 and #1029 and let's continue discussing on Github. Best, Tianyi On Tue, Dec 15, 2020 at 3:44 AM Wing Yew Poon wrote: > Hi Tianyi, > The behavior you found is indeed the current behavior in Iceberg.

Re: About schema evolution with time travel.

2020-12-14 Thread Wing Yew Poon
Hi Tianyi, The behavior you found is indeed the current behavior in Iceberg. I too found it unexpected. I have a PR to address this: https://github.com/apache/iceberg/pull/1508. Due to other work, I had not followed up on this for a while, but I am returning to it now. - Wing Yew On Mon, Dec 14,

Re: S3 strong read-after-write consistency

2020-12-14 Thread Mass Dosage
I had a call with some developers from S3 and asked and they said this change should resolve the "negative caching" issue. Atomic renames are on their radar but they said this will take a lot of work on their part. On Fri, 4 Dec 2020 at 21:57, Ryan Blue wrote: > It isn't clear whether this S3 c

Breaking change in IcebergSource

2020-12-14 Thread Ryan Murray
Hi all, We have a proposed PR here[1] which allows for custom Catalogs to be used in the Spark3 Dataframe API. As discussed in the PR[2] this change breaks support for specifying schema in the dataframe reader/writer eg: spark.read().scheam(schema).format("iceberg").load(table) The schema argum

About schema evolution with time travel.

2020-12-14 Thread Cap Kurmagati
Hi, I have a question regarding the behavior of schema evolution with time-travel in Iceberg. When I do a time-travel query against a table with schema changes. I expect that the result is structured using the schema. But it turned out to be structured using the current schema. Is this an expecte