Groups

MR3

Contact owners and managers

1–30 of 203

This Google Group is about MR3, Hive on MR3, and Spark on MR3.

0 selected

10/9/25

MR3 2.2 has been released.

We published a new blog article that compares Hive 4 on MR3 2.2 vs Trino 477. https://mr3docs.

unread,

MR3 2.2 has been released.

We published a new blog article that compares Hive 4 on MR3 2.2 vs Trino 477. https://mr3docs.

10/9/25

Farah Nadya, Sungwoo Park3

8/8/25

MR3 for HIVE 3.1.2

I uploaded the binary release of Hive 3.1.3 on MR3 2.1: https://github.com/mr3project/mr3/releases/

unread,

MR3 for HIVE 3.1.2

I uploaded the binary release of Hive 3.1.3 on MR3 2.1: https://github.com/mr3project/mr3/releases/

8/8/25

Farah Nadya, Sungwoo Park3

8/8/25

hive-mr3@googlegroups.com

Hi Sungwoo, yes i want to try mr3, i use hadoop 3.3.6 yarn 3.3.6 spark 3.5.2 not using kubernetes

unread,

hive-mr3@googlegroups.com

Hi Sungwoo, yes i want to try mr3, i use hadoop 3.3.6 yarn 3.3.6 spark 3.5.2 not using kubernetes

8/8/25

7/14/25

Seonggon is a new Hive committer.

Seonggon in the MR3 team is a new Hive committer. Congratulations. Sungwoo

unread,

Seonggon is a new Hive committer.

Seonggon in the MR3 team is a new Hive committer. Congratulations. Sungwoo

7/14/25

David Engel, Sungwoo Park2

7/14/25

Missing File in Iceberg Table

Not sure what would be the best way to fix it. I believe it is an Iceberg problem, so perhaps the

unread,

Missing File in Iceberg Table

Not sure what would be the best way to fix it. I believe it is an Iceberg problem, so perhaps the

7/14/25

7/2/25

MR3 2.1 released

MR3 2.1 has been released. For the result of performance evaluation, please see our new blog article:

unread,

MR3 2.1 released

MR3 2.1 has been released. For the result of performance evaluation, please see our new blog article:

7/2/25

David Engel, Sungwoo Park2

6/19/25

hive.aux.jars.path

In the current implementation, Hive-MR3-K8s does not use hive.aux.jars.path (disallowed) and hive.mr3

unread,

hive.aux.jars.path

In the current implementation, Hive-MR3-K8s does not use hive.aux.jars.path (disallowed) and hive.mr3

6/19/25

David Engel, … Sungwoo Park5

6/19/25

Iceberg compaction with external, MySQL Metastore

It seems that all these issues are due to the Jar file missing in the classpath. I will try to fix

unread,

Iceberg compaction with external, MySQL Metastore

It seems that all these issues are due to the Jar file missing in the classpath. I will try to fix

6/19/25

David Engel, … Ill5

6/19/25

Problem with collect_set()

Does hive4.0.1 on mr3-1.12 have the same issue? On Fri, Apr 18, 2025 at 2:48 AM David Engel <david

unread,

Problem with collect_set()

Does hive4.0.1 on mr3-1.12 have the same issue? On Fri, Apr 18, 2025 at 2:48 AM David Engel <david

6/19/25

David Engel, Sungwoo Park2

6/11/25

Apache Superset and MR3 2.x

Hi David, If you use the plain shell scripts, you cannot directly use the Superset image that we

unread,

Apache Superset and MR3 2.x

Hi David, If you use the plain shell scripts, you cannot directly use the Superset image that we

6/11/25

6/1/25

Performance of Hive-MR3 2.1

Typo: In our last benchmark, Hive-MR3 2.0: 2873 seconds vs Trino 468: 4441 seconds --> In our last

unread,

Performance of Hive-MR3 2.1

Typo: In our last benchmark, Hive-MR3 2.0: 2873 seconds vs Trino 468: 4441 seconds --> In our last

6/1/25

David Engel, Sungwoo Park5

5/14/25

Large Iceberg inserts cause HDFS errors

The old page is probably what Google returned when I searched after your earlier email. It 404-ed

unread,

Large Iceberg inserts cause HDFS errors

The old page is probably what Google returned when I searched after your earlier email. It 404-ed

5/14/25

federico jordán, Sungwoo Park5

5/6/25

Spark issues with Hive 4

Hi, I've noticed that the Hive3 branch is no longer being actively maintained. However, we still

unread,

Spark issues with Hive 4

Hi, I've noticed that the Hive3 branch is no longer being actively maintained. However, we still

5/6/25

4/21/25

New blog article on MR3 2.0

https://mr3docs.datamonad.com/blog/2025-04-18-performance-evaluation-2.0 Performance Evaluation of

unread,

New blog article on MR3 2.0

https://mr3docs.datamonad.com/blog/2025-04-18-performance-evaluation-2.0 Performance Evaluation of

4/21/25

David Engel, Sungwoo Park2

4/17/25

How to use persistent volumes in mr3worker pods

This hack continues to work. I tested it on my own cluster: WORK_DIR_PERSISTENT_VOLUME_CLAIM=workdir-

unread,

How to use persistent volumes in mr3worker pods

This hack continues to work. I tested it on my own cluster: WORK_DIR_PERSISTENT_VOLUME_CLAIM=workdir-

4/17/25

David Engel, Sungwoo Park5

4/17/25

Workdir location

Thanks, again. I'll leave those settings alone. Without work-dir being mounted from outside, I

unread,

Workdir location

Thanks, again. I'll leave those settings alone. Without work-dir being mounted from outside, I

4/17/25

4/15/25

In preparation for the release of MR3 2.0, we redesigned the website. https://datamonad.com/ The blog

unread,

In preparation for the release of MR3 2.0, we redesigned the website. https://datamonad.com/ The blog

4/15/25

11/29/24

Hive-MR3 git repository

I updated the default branch of Hive-MR3 git repository to master4.0.0. master4.0.0 is based on Hive

unread,

Hive-MR3 git repository

I updated the default branch of Hive-MR3 git repository to master4.0.0. master4.0.0 is based on Hive

11/29/24

11/14/24

Hive 4.0.1 on MR3 1.12

We have released Hive 4.0.1 on MR3 1.12. (We longer update Hive 3.1.3 on MR3.) Please check out the

unread,

Hive 4.0.1 on MR3 1.12

We have released Hive 4.0.1 on MR3 1.12. (We longer update Hive 3.1.3 on MR3.) Please check out the

11/14/24

10/9/24

A blog article on the performance of Hive 4.0.1 on MR3 1.12

Hello, We have published a new article where we report the experimental result of running TPC-DS 10TB

unread,

A blog article on the performance of Hive 4.0.1 on MR3 1.12

Hello, We have published a new article where we report the experimental result of running TPC-DS 10TB

10/9/24

8/3/24

MR3 1.11 Release

For the performance of Hive 4 on MR3, see this blog article: https://www.datamonad.com/post/2024-08-

unread,

MR3 1.11 Release

For the performance of Hive 4 on MR3, see this blog article: https://www.datamonad.com/post/2024-08-

8/3/24

7/11/24

Hive 4.0.0 on MR3

We are quite close to releasing Hive 4 on MR3 1.11, along with the least release of Hive 3.1.3 on MR3

unread,

Hive 4.0.0 on MR3

We are quite close to releasing Hive 4 on MR3 1.11, along with the least release of Hive 3.1.3 on MR3

7/11/24

Joaquim Ceballos Casals, Sungwoo Park2

6/1/24

Critial Error License has expired in MR3 Master

Could you try MR3 1.9 or MR3 1.10 Docker image for now? For MR3 1.10, there were reports of the

unread,

Critial Error License has expired in MR3 Master

Could you try MR3 1.9 or MR3 1.10 Docker image for now? For MR3 1.10, there were reports of the

6/1/24

3/17/24

MR3 1.10 Release

Here is a quick summary of performance comparison between MR3 1.9 and MR3 1.10 on the original TPC-DS

unread,

MR3 1.10 Release

Here is a quick summary of performance comparison between MR3 1.9 and MR3 1.10 on the original TPC-DS

3/17/24

David Engel, Sungwoo Park4

2/27/24

Error in ALTER TABLE ... CONCATENATE

1. For the NPE error, we don't have test cases other that q tests included in Hive. If you know

unread,

Error in ALTER TABLE ... CONCATENATE

1. For the NPE error, we don't have test cases other that q tests included in Hive. If you know

2/27/24

1/10/24

Upgrade to MR3 1.9 on Kubernetes,

Hello, If you use MR3 1.7 on Kubernetes, please update mr3-run-k8s scripts and switch to MR3 1.9. The

unread,

Upgrade to MR3 1.9 on Kubernetes,

Hello, If you use MR3 1.7 on Kubernetes, please update mr3-run-k8s scripts and switch to MR3 1.9. The

1/10/24

Sungwoo Park, David Engel3

1/9/24

I updated the mr3-run-k8s repo to fix a couple of problems: 1) Java 17 options; 2) running superset

unread,

I updated the mr3-run-k8s repo to fix a couple of problems: 1) Java 17 options; 2) running superset

1/9/24

12/23/23

Blog article on performance tuning for BI queries,

Hello, I have published a new blog article 'Performance Tuning for Single-table Queries'. It

unread,

Blog article on performance tuning for BI queries,

Hello, I have published a new blog article 'Performance Tuning for Single-table Queries'. It

12/23/23

12/15/23

Hive-MR3 in HiDataPlus.

Hive-MR3 is now shipped in HiDataPlus. For the latest announcement of HiDataPlus, please see: https:/

unread,

Hive-MR3 in HiDataPlus.

Hive-MR3 is now shipped in HiDataPlus. For the latest announcement of HiDataPlus, please see: https:/

12/15/23

12/9/23

MR3 1.8 release

MR3 1.8 has been released. For changes, see the release notes: https://mr3docs.datamonad.com/docs/

unread,

MR3 1.8 release

MR3 1.8 has been released. For changes, see the release notes: https://mr3docs.datamonad.com/docs/

12/9/23

Search

Clear search

Close search

Google apps

Main menu