[Impala-ASF-CR] IMPALA-6994: Avoid reloading a table's HMS data for file-only operations.

[Quanlong Huang (Code Review)]

Quanlong Huang has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10450 )

Change subject: IMPALA-6994: Avoid reloading a table's HMS data for file-only 
operations.
..


Patch Set 2:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/10450/2/fe/src/main/java/org/apache/impala/catalog/HdfsTable.java
File fe/src/main/java/org/apache/impala/catalog/HdfsTable.java:

http://gerrit.cloudera.org:8080/#/c/10450/2/fe/src/main/java/org/apache/impala/catalog/HdfsTable.java@1410
PS2, Line 1410: partitionsToUpdateFileMdByPath = 
getPartitionsByPath(partitionsToUpdate);
  :   loadMetadataAndDiskIds(partitionsToUpdateFileMdByPath, 
true);
> The new change behaves very much like the old code except for the case when
I don't think so. In line 1404, the dirtyPartitions are all added to 
partitionsToRemove. When dirtyPartitions exist, partitionsToRemove won't be 
empty. Thus the if-branch won't be chosen and the else-branch performs the same 
as the old codes.



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Gerrit-Change-Number: 10450
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Gerrit-Owner: Pranay Singh
Gerrit-Reviewer: Alex Behm 
Gerrit-Reviewer: Bharath Vissapragada 
Gerrit-Reviewer: Pranay Singh
Gerrit-Reviewer: Quanlong Huang 
Gerrit-Comment-Date: Sun, 20 May 2018 01:27:25 +
Gerrit-HasComments: Yes

[Impala-ASF-CR] IMPALA-5384, part 2: Simplify Coordinator locking and clarify state

[Impala Public Jenkins (Code Review)]

Impala Public Jenkins has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10440 )

Change subject: IMPALA-5384, part 2: Simplify Coordinator locking and clarify 
state
..


Patch Set 4:

This change did not cherrypick successfully into branch 2.x. To resolve this, 
please do the cherry-pick manually and submit it to Gerrit at refs/for/2.x or 
add an exception to the branch 2.x copy of bin/ignored_commits.json. Thanks, 
your friendly bot at https://jenkins.impala.io/job/cherrypick-2.x-and-test/520/ 
.


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Gerrit-PatchSet: 4
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Gerrit-Reviewer: Bikramjeet Vig 
Gerrit-Reviewer: Dan Hecht 
Gerrit-Reviewer: Impala Public Jenkins 
Gerrit-Reviewer: Tim Armstrong 
Gerrit-Comment-Date: Sat, 19 May 2018 23:10:21 +
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[Impala-ASF-CR](2.x) IMPALA-6941: load more text scanner compression plugins

[Impala Public Jenkins (Code Review)]

Impala Public Jenkins has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10462 )

Change subject: IMPALA-6941: load more text scanner compression plugins
..


Patch Set 1: Verified+1


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Gerrit-Comment-Date: Sat, 19 May 2018 23:08:32 +
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[Impala-ASF-CR](2.x) IMPALA-6941: load more text scanner compression plugins

[Impala Public Jenkins (Code Review)]

Impala Public Jenkins has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/10462 )

Change subject: IMPALA-6941: load more text scanner compression plugins
..

IMPALA-6941: load more text scanner compression plugins

Add extensions for LZ4 and ZSTD (which are supported by Hadoop).
Even without a plugin this results in better behaviour because
we don't try to treat the files with unknown extensions as
uncompressed text.

Also allow loading tables containing files with unsupported
compression types. There was weird behaviour before we knew
of the file extension but didn't support querying the table -
the catalog would load the table but the impalad would fail
processing the catalog update. The simplest way to fix it
is to just allow loading the tables.

Similarly, make the "LOAD DATA" operation more permissive -
we can copy files into a directory even if we can't
decompress them.

Switch to always checking plugin version - running mismatched plugin
is inherently unsafe.

Testing:
Positive case where LZO is loaded is exercised. Added
coverage for negative case where LZO is disabled.

Fixed test gaps:
* Querying LZO table with LZO plugin not available.
* Interacting with tables with known but unsupported text
  compressions.
* Querying files with unknown compression suffixes (which are
  treated as uncompressed text).

Change-Id: If2a9c4a4a11bed81df706e9e834400bfedfe48e6
Reviewed-on: http://gerrit.cloudera.org:8080/10165
Reviewed-by: Tim Armstrong 
Tested-by: Impala Public Jenkins 
Reviewed-on: http://gerrit.cloudera.org:8080/10462
---
M be/src/exec/CMakeLists.txt
D be/src/exec/hdfs-lzo-text-scanner.cc
D be/src/exec/hdfs-lzo-text-scanner.h
A be/src/exec/hdfs-plugin-text-scanner.cc
A be/src/exec/hdfs-plugin-text-scanner.h
M be/src/exec/hdfs-scan-node-base.cc
M be/src/exec/hdfs-text-scanner.cc
M be/src/exec/hdfs-text-scanner.h
M common/fbs/CatalogObjects.fbs
M fe/src/main/java/org/apache/impala/analysis/LoadDataStmt.java
M fe/src/main/java/org/apache/impala/catalog/HdfsCompression.java
M fe/src/main/java/org/apache/impala/catalog/HdfsFileFormat.java
M fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java
A testdata/workloads/functional-query/queries/QueryTest/disable-lzo-plugin.test
A 
testdata/workloads/functional-query/queries/QueryTest/unsupported-compression-partitions.test
A tests/custom_cluster/test_scanner_plugin.py
M tests/metadata/test_partition_metadata.py
17 files changed, 459 insertions(+), 280 deletions(-)

Approvals:
  Tim Armstrong: Looks good to me, approved
  Impala Public Jenkins: Verified

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Gerrit-Project: Impala-ASF
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Gerrit-Change-Id: If2a9c4a4a11bed81df706e9e834400bfedfe48e6
Gerrit-Change-Number: 10462
Gerrit-PatchSet: 2
Gerrit-Owner: Tim Armstrong 
Gerrit-Reviewer: Impala Public Jenkins 
Gerrit-Reviewer: Tim Armstrong 

[Impala-ASF-CR] IMPALA-5931: Generates scan ranges in planner for s3/adls

[Vuk Ercegovac (Code Review)]

Vuk Ercegovac has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/8523 )

Change subject: IMPALA-5931: Generates scan ranges in planner for s3/adls
..


Patch Set 14:

running more tests...


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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I326065adbb2f7e632814113aae85cb51ca4779a5
Gerrit-Change-Number: 8523
Gerrit-PatchSet: 14
Gerrit-Owner: Vuk Ercegovac 
Gerrit-Reviewer: Alex Behm 
Gerrit-Reviewer: Dan Hecht 
Gerrit-Reviewer: Dimitris Tsirogiannis 
Gerrit-Reviewer: Lars Volker 
Gerrit-Reviewer: Mostafa Mokhtar 
Gerrit-Reviewer: Vuk Ercegovac 
Gerrit-Comment-Date: Sat, 19 May 2018 20:26:10 +
Gerrit-HasComments: No

[Impala-ASF-CR](2.x) IMPALA-6941: load more text scanner compression plugins

[Tim Armstrong (Code Review)]

Tim Armstrong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10462 )

Change subject: IMPALA-6941: load more text scanner compression plugins
..


Patch Set 1: Code-Review+2

resolve conflict around startup flags.


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Gerrit-Change-Id: If2a9c4a4a11bed81df706e9e834400bfedfe48e6
Gerrit-Change-Number: 10462
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Gerrit-Reviewer: Tim Armstrong 
Gerrit-Comment-Date: Sat, 19 May 2018 19:25:55 +
Gerrit-HasComments: No

[Impala-ASF-CR](2.x) IMPALA-6941: load more text scanner compression plugins

[Impala Public Jenkins (Code Review)]

Impala Public Jenkins has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10462 )

Change subject: IMPALA-6941: load more text scanner compression plugins
..


Patch Set 1:

Build started: https://jenkins.impala.io/job/gerrit-verify-dryrun/2513/


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Gerrit-Change-Id: If2a9c4a4a11bed81df706e9e834400bfedfe48e6
Gerrit-Change-Number: 10462
Gerrit-PatchSet: 1
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Gerrit-Reviewer: Impala Public Jenkins 
Gerrit-Reviewer: Tim Armstrong 
Gerrit-Comment-Date: Sat, 19 May 2018 19:26:03 +
Gerrit-HasComments: No

[Impala-ASF-CR](2.x) IMPALA-6941: load more text scanner compression plugins

[Tim Armstrong (Code Review)]

Hello Impala Public Jenkins,

I'd like you to do a code review. Please visit

http://gerrit.cloudera.org:8080/10462

to review the following change.


Change subject: IMPALA-6941: load more text scanner compression plugins
..

IMPALA-6941: load more text scanner compression plugins

Add extensions for LZ4 and ZSTD (which are supported by Hadoop).
Even without a plugin this results in better behaviour because
we don't try to treat the files with unknown extensions as
uncompressed text.

Also allow loading tables containing files with unsupported
compression types. There was weird behaviour before we knew
of the file extension but didn't support querying the table -
the catalog would load the table but the impalad would fail
processing the catalog update. The simplest way to fix it
is to just allow loading the tables.

Similarly, make the "LOAD DATA" operation more permissive -
we can copy files into a directory even if we can't
decompress them.

Switch to always checking plugin version - running mismatched plugin
is inherently unsafe.

Testing:
Positive case where LZO is loaded is exercised. Added
coverage for negative case where LZO is disabled.

Fixed test gaps:
* Querying LZO table with LZO plugin not available.
* Interacting with tables with known but unsupported text
  compressions.
* Querying files with unknown compression suffixes (which are
  treated as uncompressed text).

Change-Id: If2a9c4a4a11bed81df706e9e834400bfedfe48e6
Reviewed-on: http://gerrit.cloudera.org:8080/10165
Reviewed-by: Tim Armstrong 
Tested-by: Impala Public Jenkins 
---
M be/src/exec/CMakeLists.txt
D be/src/exec/hdfs-lzo-text-scanner.cc
D be/src/exec/hdfs-lzo-text-scanner.h
A be/src/exec/hdfs-plugin-text-scanner.cc
A be/src/exec/hdfs-plugin-text-scanner.h
M be/src/exec/hdfs-scan-node-base.cc
M be/src/exec/hdfs-text-scanner.cc
M be/src/exec/hdfs-text-scanner.h
M common/fbs/CatalogObjects.fbs
M fe/src/main/java/org/apache/impala/analysis/LoadDataStmt.java
M fe/src/main/java/org/apache/impala/catalog/HdfsCompression.java
M fe/src/main/java/org/apache/impala/catalog/HdfsFileFormat.java
M fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java
A testdata/workloads/functional-query/queries/QueryTest/disable-lzo-plugin.test
A 
testdata/workloads/functional-query/queries/QueryTest/unsupported-compression-partitions.test
A tests/custom_cluster/test_scanner_plugin.py
M tests/metadata/test_partition_metadata.py
17 files changed, 459 insertions(+), 280 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/62/10462/1
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Gerrit-Change-Id: If2a9c4a4a11bed81df706e9e834400bfedfe48e6
Gerrit-Change-Number: 10462
Gerrit-PatchSet: 1
Gerrit-Owner: Tim Armstrong 
Gerrit-Reviewer: Impala Public Jenkins 

[Impala-ASF-CR] IMPALA-6994: Avoid reloading a table's HMS data for file-only operations.

[Pranay Singh (Code Review)]

Pranay Singh has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10450 )

Change subject: IMPALA-6994: Avoid reloading a table's HMS data for file-only 
operations.
..


Patch Set 2:

> > (2 comments)
 > >
 > > Just interested in this optimization. May I ask some questions?
 > >
 > > Looks like we are optimizing the case when partitionsToUpdate !=
 > > null and partitions were neither dropped, created. Can we
 > optimize
 > > the case that partitionsToUpdate != null and some partitions are
 > > dropped? For example when an INSERT OVERWRITE statement updates
 > the
 > > majority of the partitions and only drops few of them.
 >
 > Will this case not introduce inconsistency between HMS and Impala?

The problem with optimization is that introduces inconsistency, something which 
my change introduces too, when ALTER TABLE is done and HMS crashes.


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Gerrit-PatchSet: 2
Gerrit-Owner: Pranay Singh
Gerrit-Reviewer: Alex Behm 
Gerrit-Reviewer: Bharath Vissapragada 
Gerrit-Reviewer: Pranay Singh
Gerrit-Reviewer: Quanlong Huang 
Gerrit-Comment-Date: Sat, 19 May 2018 18:18:08 +
Gerrit-HasComments: No

[Impala-ASF-CR] IMPALA-6994: Avoid reloading a table's HMS data for file-only operations.

[Pranay Singh (Code Review)]

Pranay Singh has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10450 )

Change subject: IMPALA-6994: Avoid reloading a table's HMS data for file-only 
operations.
..


Patch Set 2:

> (2 comments)
 >
 > Just interested in this optimization. May I ask some questions?
 >
 > Looks like we are optimizing the case when partitionsToUpdate !=
 > null and partitions were neither dropped, created. Can we optimize
 > the case that partitionsToUpdate != null and some partitions are
 > dropped? For example when an INSERT OVERWRITE statement updates the
 > majority of the partitions and only drops few of them.

Will this case not introduce inconsistency between HMS and Impala?


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Gerrit-Project: Impala-ASF
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Gerrit-Change-Id: Iaabdf38af3f30c65ada9734eb471dbfa6ecdd74a
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Gerrit-Reviewer: Alex Behm 
Gerrit-Reviewer: Bharath Vissapragada 
Gerrit-Reviewer: Pranay Singh
Gerrit-Reviewer: Quanlong Huang 
Gerrit-Comment-Date: Sat, 19 May 2018 18:15:20 +
Gerrit-HasComments: No

[Impala-ASF-CR] IMPALA-6994: Avoid reloading a table's HMS data for file-only operations.

[Pranay Singh (Code Review)]

Pranay Singh has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10450 )

Change subject: IMPALA-6994: Avoid reloading a table's HMS data for file-only 
operations.
..


Patch Set 2:

(2 comments)

> (2 comments)
 >
 > Just interested in this optimization. May I ask some questions?
 >
 > Looks like we are optimizing the case when partitionsToUpdate !=
 > null and partitions were neither dropped, created. Can we optimize
 > the case that partitionsToUpdate != null and some partitions are
 > dropped? For example when an INSERT OVERWRITE statement updates the
 > majority of the partitions and only drops few of them.

Will this case not cause introduce inconsistency between HMS and Impala ?

http://gerrit.cloudera.org:8080/#/c/10450/2/fe/src/main/java/org/apache/impala/catalog/HdfsTable.java
File fe/src/main/java/org/apache/impala/catalog/HdfsTable.java:

http://gerrit.cloudera.org:8080/#/c/10450/2/fe/src/main/java/org/apache/impala/catalog/HdfsTable.java@1409
PS2, Line 1409: size() == 0
> nit: can be simplified by isEmpty()
OK


http://gerrit.cloudera.org:8080/#/c/10450/2/fe/src/main/java/org/apache/impala/catalog/HdfsTable.java@1410
PS2, Line 1410: partitionsToUpdateFileMdByPath = 
getPartitionsByPath(partitionsToUpdate);
  :   loadMetadataAndDiskIds(partitionsToUpdateFileMdByPath, 
true);
> Looks like the original codes perform the same as these two lines. Since dr
The new change behaves very much like the old code except for the case when 
dirtyPartitions exist in  that case there is an overhead of dropping and 
loading the dirty partitions from Metastore.



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Gerrit-Change-Id: Iaabdf38af3f30c65ada9734eb471dbfa6ecdd74a
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Gerrit-PatchSet: 2
Gerrit-Owner: Pranay Singh
Gerrit-Reviewer: Alex Behm 
Gerrit-Reviewer: Bharath Vissapragada 
Gerrit-Reviewer: Pranay Singh
Gerrit-Reviewer: Quanlong Huang 
Gerrit-Comment-Date: Sat, 19 May 2018 18:14:42 +
Gerrit-HasComments: Yes

[Impala-ASF-CR] IMPALA-6994: Avoid reloading a table's HMS data for file-only operations.

[Quanlong Huang (Code Review)]

Quanlong Huang has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10450 )

Change subject: IMPALA-6994: Avoid reloading a table's HMS data for file-only 
operations.
..


Patch Set 2:

(2 comments)

Just interested in this optimization. May I ask some questions?

Looks like we are optimizing the case when partitionsToUpdate != null and 
partitions were neither dropped, created. Can we optimize the case that 
partitionsToUpdate != null and some partitions are dropped? For example when an 
INSERT OVERWRITE statement updates the majority of the partitions and only 
drops few of them.

http://gerrit.cloudera.org:8080/#/c/10450/2/fe/src/main/java/org/apache/impala/catalog/HdfsTable.java
File fe/src/main/java/org/apache/impala/catalog/HdfsTable.java:

http://gerrit.cloudera.org:8080/#/c/10450/2/fe/src/main/java/org/apache/impala/catalog/HdfsTable.java@1409
PS2, Line 1409: size() == 0
nit: can be simplified by isEmpty()


http://gerrit.cloudera.org:8080/#/c/10450/2/fe/src/main/java/org/apache/impala/catalog/HdfsTable.java@1410
PS2, Line 1410: partitionsToUpdateFileMdByPath = 
getPartitionsByPath(partitionsToUpdate);
  :   loadMetadataAndDiskIds(partitionsToUpdateFileMdByPath, 
true);
Looks like the original codes perform the same as these two lines. Since 
dropPartitions, loadPartitionsFromMetastore and loadPartitionsFromMetastore 
will return fast when their first parameter is empty. partitionExist is not 
empty means partitionsToUpdate != null, so the original codes will perform as 
these two lines.

My question is what are the HMS requests we save?



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[Impala-ASF-CR] IMPALA-5706: Spilling sort optimisations

[Impala Public Jenkins (Code Review)]

Impala Public Jenkins has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/9943 )

Change subject: IMPALA-5706: Spilling sort optimisations
..


Patch Set 13: Verified-1

Build failed: https://jenkins.impala.io/job/gerrit-verify-dryrun/2512/


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Gerrit-Reviewer: Csaba Ringhofer 
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[Impala-ASF-CR] IMPALA-5706: Spilling sort optimisations

[Impala Public Jenkins (Code Review)]

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Change subject: IMPALA-5706: Spilling sort optimisations
..


Patch Set 13:

Build started: https://jenkins.impala.io/job/gerrit-verify-dryrun/2512/


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