How do you see the row groups of your files in hdfs
I came across this page in jira, and I'd like to know how to get that same view of the row groups. Like this:
Is there a command in hdfs that can show this to me?
apache-spark hadoop hdfs parquet
asked Nov 13 '18 at 17:30
user3685285user3685285
1,56431737
add a comment |
I came across this page in jira, and I'd like to know how to get that same view of the row groups. Like this:
Is there a command in hdfs that can show this to me?
apache-spark hadoop hdfs parquet
asked Nov 13 '18 at 17:30
user3685285user3685285
1,56431737
add a comment |
I came across this page in jira, and I'd like to know how to get that same view of the row groups. Like this:
Is there a command in hdfs that can show this to me?
apache-spark hadoop hdfs parquet
asked Nov 13 '18 at 17:30
user3685285user3685285
1,56431737
I came across this page in jira, and I'd like to know how to get that same view of the row groups. Like this:
Is there a command in hdfs that can show this to me?
apache-spark hadoop hdfs parquet
apache-spark hadoop hdfs parquet
asked Nov 13 '18 at 17:30
user3685285user3685285
1,56431737
asked Nov 13 '18 at 17:30
user3685285user3685285
1,56431737
asked Nov 13 '18 at 17:30
user3685285user3685285
1,56431737
asked Nov 13 '18 at 17:30
user3685285user3685285
1,56431737
asked Nov 13 '18 at 17:30
user3685285user3685285
1,56431737
1,56431737
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
I reported that JIRA. I used
parquet-tools meta /path/to/file.parquet | grep "row group"
and then edited the output by hand to align the numbers. Alternatively, you can append | column -t for some basic alignment. Although numbers will be left-aligned in this case instead of being right-aligned, at least they will line up one under the other.
parquet-tools itself is an undocumented helper script included in parquet-mr. Instead of using that you can just call
hadoop jar /path/to/parquet-tools-<VERSION>.jar
on a Hadoop cluster or
java -jar /path/to/parquet-tools-<VERSION>.jar
locally. For the latter, you have to build parquet using the local profile, i.e.,
mvn package -Plocal
This is described in the build instructions.
answered Nov 14 '18 at 16:56
ZoltanZoltan
1,165313
I built parquet tools from the source, but it seems that I have to use a java command to run the built jar. How do you get the parquet-tools executable like that?
– user3685285
Nov 14 '18 at 18:38
parqet-toolsis just a shell script that does the same. I extended my answer with details about this.
– Zoltan
Nov 14 '18 at 19:39
add a comment |
I guess its an output of parquet-tools sifted through grep, like
$ parquet-tools meta --debug <file-name> | grep "row group"
answered Nov 13 '18 at 19:13
mazaneichamazaneicha
2,5151728
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
I reported that JIRA. I used
parquet-tools meta /path/to/file.parquet | grep "row group"
and then edited the output by hand to align the numbers. Alternatively, you can append | column -t for some basic alignment. Although numbers will be left-aligned in this case instead of being right-aligned, at least they will line up one under the other.
parquet-tools itself is an undocumented helper script included in parquet-mr. Instead of using that you can just call
hadoop jar /path/to/parquet-tools-<VERSION>.jar
on a Hadoop cluster or
java -jar /path/to/parquet-tools-<VERSION>.jar
locally. For the latter, you have to build parquet using the local profile, i.e.,
mvn package -Plocal
This is described in the build instructions.
answered Nov 14 '18 at 16:56
ZoltanZoltan
1,165313
I built parquet tools from the source, but it seems that I have to use a java command to run the built jar. How do you get the parquet-tools executable like that?
– user3685285
Nov 14 '18 at 18:38
parqet-toolsis just a shell script that does the same. I extended my answer with details about this.
– Zoltan
Nov 14 '18 at 19:39
add a comment |
I reported that JIRA. I used
parquet-tools meta /path/to/file.parquet | grep "row group"
and then edited the output by hand to align the numbers. Alternatively, you can append | column -t for some basic alignment. Although numbers will be left-aligned in this case instead of being right-aligned, at least they will line up one under the other.
parquet-tools itself is an undocumented helper script included in parquet-mr. Instead of using that you can just call
hadoop jar /path/to/parquet-tools-<VERSION>.jar
on a Hadoop cluster or
java -jar /path/to/parquet-tools-<VERSION>.jar
locally. For the latter, you have to build parquet using the local profile, i.e.,
mvn package -Plocal
This is described in the build instructions.
answered Nov 14 '18 at 16:56
ZoltanZoltan
1,165313
I built parquet tools from the source, but it seems that I have to use a java command to run the built jar. How do you get the parquet-tools executable like that?
– user3685285
Nov 14 '18 at 18:38
parqet-toolsis just a shell script that does the same. I extended my answer with details about this.
– Zoltan
Nov 14 '18 at 19:39
add a comment |
I reported that JIRA. I used
parquet-tools meta /path/to/file.parquet | grep "row group"
and then edited the output by hand to align the numbers. Alternatively, you can append | column -t for some basic alignment. Although numbers will be left-aligned in this case instead of being right-aligned, at least they will line up one under the other.
parquet-tools itself is an undocumented helper script included in parquet-mr. Instead of using that you can just call
hadoop jar /path/to/parquet-tools-<VERSION>.jar
on a Hadoop cluster or
java -jar /path/to/parquet-tools-<VERSION>.jar
locally. For the latter, you have to build parquet using the local profile, i.e.,
mvn package -Plocal
This is described in the build instructions.
answered Nov 14 '18 at 16:56
ZoltanZoltan
1,165313
I reported that JIRA. I used
parquet-tools meta /path/to/file.parquet | grep "row group"
and then edited the output by hand to align the numbers. Alternatively, you can append | column -t for some basic alignment. Although numbers will be left-aligned in this case instead of being right-aligned, at least they will line up one under the other.
parquet-tools itself is an undocumented helper script included in parquet-mr. Instead of using that you can just call
hadoop jar /path/to/parquet-tools-<VERSION>.jar
on a Hadoop cluster or
java -jar /path/to/parquet-tools-<VERSION>.jar
locally. For the latter, you have to build parquet using the local profile, i.e.,
mvn package -Plocal
This is described in the build instructions.
answered Nov 14 '18 at 16:56
ZoltanZoltan
1,165313
edited Nov 14 '18 at 19:38
answered Nov 14 '18 at 16:56
ZoltanZoltan
1,165313
answered Nov 14 '18 at 16:56
ZoltanZoltan
1,165313
answered Nov 14 '18 at 16:56
ZoltanZoltan
1,165313
1,165313
I built parquet tools from the source, but it seems that I have to use a java command to run the built jar. How do you get the parquet-tools executable like that?
– user3685285
Nov 14 '18 at 18:38
parqet-toolsis just a shell script that does the same. I extended my answer with details about this.
– Zoltan
Nov 14 '18 at 19:39
add a comment |
I built parquet tools from the source, but it seems that I have to use a java command to run the built jar. How do you get the parquet-tools executable like that?
– user3685285
Nov 14 '18 at 18:38
parqet-toolsis just a shell script that does the same. I extended my answer with details about this.
– Zoltan
Nov 14 '18 at 19:39
I built parquet tools from the source, but it seems that I have to use a java command to run the built jar. How do you get the parquet-tools executable like that?
– user3685285
Nov 14 '18 at 18:38
I built parquet tools from the source, but it seems that I have to use a java command to run the built jar. How do you get the parquet-tools executable like that?
– user3685285
Nov 14 '18 at 18:38
parqet-tools is just a shell script that does the same. I extended my answer with details about this.– Zoltan
Nov 14 '18 at 19:39
parqet-tools is just a shell script that does the same. I extended my answer with details about this.– Zoltan
Nov 14 '18 at 19:39
add a comment |
I guess its an output of parquet-tools sifted through grep, like
$ parquet-tools meta --debug <file-name> | grep "row group"
answered Nov 13 '18 at 19:13
mazaneichamazaneicha
2,5151728
add a comment |
I guess its an output of parquet-tools sifted through grep, like
$ parquet-tools meta --debug <file-name> | grep "row group"
answered Nov 13 '18 at 19:13
mazaneichamazaneicha
2,5151728
add a comment |
I guess its an output of parquet-tools sifted through grep, like
$ parquet-tools meta --debug <file-name> | grep "row group"
answered Nov 13 '18 at 19:13
mazaneichamazaneicha
2,5151728
I guess its an output of parquet-tools sifted through grep, like
$ parquet-tools meta --debug <file-name> | grep "row group"
answered Nov 13 '18 at 19:13
mazaneichamazaneicha
2,5151728
answered Nov 13 '18 at 19:13
mazaneichamazaneicha
2,5151728
answered Nov 13 '18 at 19:13
mazaneichamazaneicha
2,5151728
answered Nov 13 '18 at 19:13
mazaneichamazaneicha
2,5151728
2,5151728
add a comment |
add a comment |
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