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Introducing HoodieLogFormat V2 with versioning support

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- HoodieLogFormat V2 has support for LogFormat evolution through versioning
			- LogVersion is associated with a LogBlock not a LogFile
			- Based on a version for a LogBlock, approporiate code path is executed
		- Implemented LazyReading of Hoodie Log Blocks with Memory / IO tradeoff
		- Implemented Reverse pointer to be able to traverse the log in reverse
		- Introduce new MAGIC for backwards compatibility with logs without versions
This commit is contained in:
Nishith Agarwal
2018-02-15 11:01:25 -08:00
committed by vinoth chandar
parent dfd1979c51
commit 5405a6287b
32 changed files with 2066 additions and 677 deletions
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25
hoodie-client/src/main/java/com/uber/hoodie/config/HoodieCompactionConfig.java
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@@ -105,6 +105,15 @@ public class HoodieCompactionConfig extends DefaultHoodieConfig {
// Default memory size per compaction, excess spills to disk
public static final String DEFAULT_MAX_SIZE_IN_MEMORY_PER_COMPACTION_IN_BYTES = String.valueOf(1024*1024*1024L); //1GB
// used to choose a trade off between IO vs Memory when performing compaction process
// Depending on outputfile_size and memory provided, choose true to avoid OOM for large file size + small memory
public static final String COMPACTION_LAZY_BLOCK_READ_ENABLED_PROP = "hoodie.compaction.lazy.block.read";
public static final String DEFAULT_COMPACTION_LAZY_BLOCK_READ_ENABLED = "false";
// used to choose whether to enable reverse log reading (reverse log traversal)
public static final String COMPACTION_REVERSE_LOG_READ_ENABLED_PROP = "hoodie.compaction.reverse.log.read";
public static final String DEFAULT_COMPACTION_REVERSE_LOG_READ_ENABLED = "false";
private HoodieCompactionConfig(Properties props) {
super(props);
}
@@ -225,6 +234,18 @@ public class HoodieCompactionConfig extends DefaultHoodieConfig {
return this;
}
public Builder withCompactionLazyBlockReadEnabled(Boolean compactionLazyBlockReadEnabled) {
props.setProperty(COMPACTION_LAZY_BLOCK_READ_ENABLED_PROP,
String.valueOf(compactionLazyBlockReadEnabled));
return this;
}
public Builder withCompactionReverseLogReadEnabled(Boolean compactionReverseLogReadEnabled) {
props.setProperty(COMPACTION_REVERSE_LOG_READ_ENABLED_PROP,
String.valueOf(compactionReverseLogReadEnabled));
return this;
}
public HoodieCompactionConfig build() {
HoodieCompactionConfig config = new HoodieCompactionConfig(props);
setDefaultOnCondition(props, !props.containsKey(AUTO_CLEAN_PROP),
@@ -262,6 +283,10 @@ public class HoodieCompactionConfig extends DefaultHoodieConfig {
TARGET_IO_PER_COMPACTION_IN_MB_PROP, DEFAULT_TARGET_IO_PER_COMPACTION_IN_MB);
setDefaultOnCondition(props, !props.containsKey(MAX_SIZE_IN_MEMORY_PER_COMPACTION_IN_BYTES_PROP),
MAX_SIZE_IN_MEMORY_PER_COMPACTION_IN_BYTES_PROP, DEFAULT_MAX_SIZE_IN_MEMORY_PER_COMPACTION_IN_BYTES);
setDefaultOnCondition(props, !props.containsKey(COMPACTION_LAZY_BLOCK_READ_ENABLED_PROP),
COMPACTION_LAZY_BLOCK_READ_ENABLED_PROP, DEFAULT_COMPACTION_LAZY_BLOCK_READ_ENABLED);
setDefaultOnCondition(props, !props.containsKey(COMPACTION_REVERSE_LOG_READ_ENABLED_PROP),
COMPACTION_REVERSE_LOG_READ_ENABLED_PROP, DEFAULT_COMPACTION_REVERSE_LOG_READ_ENABLED);
HoodieCleaningPolicy.valueOf(props.getProperty(CLEANER_POLICY_PROP));
Preconditions.checkArgument(