Class OrcOutputFormat.Builder
- All Implemented Interfaces:
software.amazon.jsii.Builder<OrcOutputFormat>
- Enclosing class:
OrcOutputFormat
OrcOutputFormat.-
Method Summary
Modifier and TypeMethodDescriptionThe Hadoop Distributed File System (HDFS) block size.bloomFilterColumns(List<String> bloomFilterColumns) The column names for which you want Firehose to create bloom filters.bloomFilterFalsePositiveProbability(Number bloomFilterFalsePositiveProbability) The Bloom filter false positive probability (FPP).build()compression(OrcCompression compression) The compression code to use over data blocks.static OrcOutputFormat.Buildercreate()dictionaryKeyThreshold(Number dictionaryKeyThreshold) Determines whether dictionary encoding should be applied to a column.enablePadding(Boolean enablePadding) Set this totrueto indicate that you want stripes to be padded to the HDFS block boundaries.formatVersion(OrcFormatVersion formatVersion) The version of the ORC format to write.paddingTolerance(Number paddingTolerance) A number between 0 and 1 that defines the tolerance for block padding as a decimal fraction of stripe size.rowIndexStride(Number rowIndexStride) The number of rows between index entries.stripeSize(Size stripeSize) The number of bytes in each stripe.
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Method Details
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create
- Returns:
- a new instance of
OrcOutputFormat.Builder.
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blockSize
The Hadoop Distributed File System (HDFS) block size.This is useful if you intend to copy the data from Amazon S3 to HDFS before querying. Firehose uses this value for padding calculations.
Default: `Size.mebibytes(256)`
- Parameters:
blockSize- The Hadoop Distributed File System (HDFS) block size. This parameter is required.- Returns:
this
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bloomFilterColumns
@Stability(Stable) public OrcOutputFormat.Builder bloomFilterColumns(List<String> bloomFilterColumns) The column names for which you want Firehose to create bloom filters.Default: no bloom filters are created
- Parameters:
bloomFilterColumns- The column names for which you want Firehose to create bloom filters. This parameter is required.- Returns:
this- See Also:
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bloomFilterFalsePositiveProbability
@Stability(Stable) public OrcOutputFormat.Builder bloomFilterFalsePositiveProbability(Number bloomFilterFalsePositiveProbability) The Bloom filter false positive probability (FPP).The lower the FPP, the bigger the bloom filter.
Default: `0.05`
- Parameters:
bloomFilterFalsePositiveProbability- The Bloom filter false positive probability (FPP). This parameter is required.- Returns:
this- See Also:
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compression
The compression code to use over data blocks.The possible values are
NONE,SNAPPY, andZLIB. UseSNAPPYfor higher decompression speed. UseGZIPif the compression ratio is more important than speed.Default: `SNAPPY`
- Parameters:
compression- The compression code to use over data blocks. This parameter is required.- Returns:
this- See Also:
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dictionaryKeyThreshold
@Stability(Stable) public OrcOutputFormat.Builder dictionaryKeyThreshold(Number dictionaryKeyThreshold) Determines whether dictionary encoding should be applied to a column.If the number of distinct keys (unique values) in a column exceeds this fraction of the total non-null rows in that column, dictionary encoding will be turned off for that specific column.
To turn off dictionary encoding, set this threshold to 0. To always use dictionary encoding, set this threshold to 1.
Default: `0.8`
- Parameters:
dictionaryKeyThreshold- Determines whether dictionary encoding should be applied to a column. This parameter is required.- Returns:
this- See Also:
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enablePadding
Set this totrueto indicate that you want stripes to be padded to the HDFS block boundaries.This is useful if you intend to copy the data from Amazon S3 to HDFS before querying.
Default: `false`
- Parameters:
enablePadding- Set this totrueto indicate that you want stripes to be padded to the HDFS block boundaries. This parameter is required.- Returns:
this- See Also:
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formatVersion
The version of the ORC format to write.The possible values are
V0_11andV0_12.Default: `V0_12`
- Parameters:
formatVersion- The version of the ORC format to write. This parameter is required.- Returns:
this- See Also:
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paddingTolerance
A number between 0 and 1 that defines the tolerance for block padding as a decimal fraction of stripe size.The default value is 0.05, which means 5 percent of stripe size.
For the default values of 64 MiB ORC stripes and 256 MiB HDFS blocks, the default block padding tolerance of 5 percent reserves a maximum of 3.2 MiB for padding within the 256 MiB block. In such a case, if the available size within the block is more than 3.2 MiB, a new, smaller stripe is inserted to fit within that space. This ensures that no stripe crosses block boundaries and causes remote reads within a node-local task.
Kinesis Data Firehose ignores this parameter when
EnablePaddingisfalse.Default: `0.05` if `enablePadding` is `true`
- Parameters:
paddingTolerance- A number between 0 and 1 that defines the tolerance for block padding as a decimal fraction of stripe size. This parameter is required.- Returns:
this- See Also:
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rowIndexStride
The number of rows between index entries.Default: 10000
- Parameters:
rowIndexStride- The number of rows between index entries. This parameter is required.- Returns:
this- See Also:
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stripeSize
The number of bytes in each stripe.The default is 64 MiB and the minimum is 8 MiB.
Default: `Size.mebibytes(64)`
- Parameters:
stripeSize- The number of bytes in each stripe. This parameter is required.- Returns:
this- See Also:
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build
- Specified by:
buildin interfacesoftware.amazon.jsii.Builder<OrcOutputFormat>- Returns:
- a newly built instance of
OrcOutputFormat.
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