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https://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/wal/WAL.html
A Write Ahead Log (WAL) provides service for reading, writing waledits. This interface provides APIs for WAL users (such as RegionServer) to use the WAL (do append, sync, etc). Note that some internals, such as log rolling and performance
https://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/filter/ColumnRangeFilter.html
This filter is used for selecting only those keys with columns that are between minColumn to maxColumn. For example, if minColumn is 'an', and maxColumn is 'be', it will pass keys with columns like 'ana', 'bad', but not keys with columns
https://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/client/Scan.html
(package private) Scan
Methods inherited from class org
https://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/mapreduce/MultiTableOutputFormat.html
@Public public class MultiTableOutputFormat extends org
https://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/filter/FilterList.html
@Public public final class FilterList extends FilterBase
Implementation of Filter that represents an ordered List of Filters which will be evaluated with a specified boolean operator FilterList.Operator.MUST_PASS_ALL (AND) or FilterList.
https://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.html
Since HBASE-29249, CacheConfig implements PropagatingConfigurationObserver and registers itself together with the used BlockCache implementation for notifications of dynamic configuration changes
https://hbase.apache.org/code-of-conduct
Policy
We expect participants in discussions on the HBase project mailing lists, IRC channels, and JIRA issues to abide by the Apache Software Foundation's Code of ConductÂ
https://hbase.apache.org/export-control
Apache HBase uses the built-in java cryptography libraries
https://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/util/RegionSplitter.UniformSplit.html
SplitAlgorithm
In HBase, the first row is represented by an empty byte array
https://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/client/Result.html
A Result is backed by an array of Cell objects, each representing an HBase cell defined by the row, family, qualifier, timestamp, and value
https://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/client/ColumnFamilyDescriptorBuilder.html
don't expect that setting BLOCKSIZE=4k means hbase data will align with an SSDs 4k page accesses (TODO)