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<div class="subTitle">org.apache.hadoop.hbase.mob</div>
<h2 title="Class MobConstants" class="title">Class MobConstants</h2>
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<li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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<ul class="inheritance">
<li>org.apache.hadoop.hbase.mob.MobConstants</li>
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<pre>@InterfaceAudience.Public
public final class <a href="../../../../../src-html/org/apache/hadoop/hbase/mob/MobConstants.html#line.32">MobConstants</a>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block">The constants used in mob.</div>
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<h3>Field Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#BULKLOAD_DIR_NAME">BULKLOAD_DIR_NAME</a></span></code>
<div class="block">Old configuration parameters (obsolete)</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_EVICT_REMAIN_RATIO">DEFAULT_EVICT_REMAIN_RATIO</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MIN_AGE_TO_ARCHIVE">DEFAULT_MIN_AGE_TO_ARCHIVE</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MOB_CACHE_EVICT_PERIOD">DEFAULT_MOB_CACHE_EVICT_PERIOD</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MOB_CLEANER_PERIOD">DEFAULT_MOB_CLEANER_PERIOD</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MOB_COMPACTION_BATCH_SIZE">DEFAULT_MOB_COMPACTION_BATCH_SIZE</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MOB_COMPACTION_CHORE_PERIOD">DEFAULT_MOB_COMPACTION_CHORE_PERIOD</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MOB_COMPACTION_MAX_FILE_SIZE">DEFAULT_MOB_COMPACTION_MAX_FILE_SIZE</a></span></code>
<div class="block">Default maximum selection size = 1GB</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MOB_COMPACTION_MERGEABLE_THRESHOLD">DEFAULT_MOB_COMPACTION_MERGEABLE_THRESHOLD</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MOB_COMPACTION_THREADS_MAX">DEFAULT_MOB_COMPACTION_THREADS_MAX</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MOB_COMPACTION_TYPE">DEFAULT_MOB_COMPACTION_TYPE</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MOB_DELFILE_MAX_COUNT">DEFAULT_MOB_DELFILE_MAX_COUNT</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MOB_DISCARD_MISS">DEFAULT_MOB_DISCARD_MISS</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MOB_FILE_CACHE_SIZE">DEFAULT_MOB_FILE_CACHE_SIZE</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEFAULT_MOB_MAJOR_COMPACTION_REGION_BATCH_SIZE">DEFAULT_MOB_MAJOR_COMPACTION_REGION_BATCH_SIZE</a></span></code>
<div class="block">Default is 0 - means no limit - all regions of a MOB table will be compacted at once</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#DEPRECATED_MOB_CLEANER_PERIOD">DEPRECATED_MOB_CLEANER_PERIOD</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#EMPTY_STRING">EMPTY_STRING</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#EMPTY_VALUE_ON_MOBCELL_MISS">EMPTY_VALUE_ON_MOBCELL_MISS</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#FULL_MOB_COMPACTION_TYPE">FULL_MOB_COMPACTION_TYPE</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MIN_AGE_TO_ARCHIVE_KEY">MIN_AGE_TO_ARCHIVE_KEY</a></span></code>
<div class="block">Minimum MOB file age to archive, default (3600000 - 1h)</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_CACHE_BLOCKS">MOB_CACHE_BLOCKS</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_CACHE_EVICT_PERIOD">MOB_CACHE_EVICT_PERIOD</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_CACHE_EVICT_REMAIN_RATIO">MOB_CACHE_EVICT_REMAIN_RATIO</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_CLEANER_PERIOD">MOB_CLEANER_PERIOD</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_COMPACTION_BATCH_SIZE">MOB_COMPACTION_BATCH_SIZE</a></span></code>
<div class="block">The max number of the mob files that is allowed in a batch of the mob compaction.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_COMPACTION_CHORE_PERIOD">MOB_COMPACTION_CHORE_PERIOD</a></span></code>
<div class="block">The period that MobCompactionChore runs.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_COMPACTION_MAX_FILE_SIZE_KEY">MOB_COMPACTION_MAX_FILE_SIZE_KEY</a></span></code>
<div class="block">Maximum size of a MOB compaction selection</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_COMPACTION_MERGEABLE_THRESHOLD">MOB_COMPACTION_MERGEABLE_THRESHOLD</a></span></code>
<div class="block">If the size of a mob file is less than this value, it's regarded as a small file and needs to
be merged in mob compaction.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_COMPACTION_THREADS_MAX">MOB_COMPACTION_THREADS_MAX</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_COMPACTION_TYPE_KEY">MOB_COMPACTION_TYPE_KEY</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_COMPACTOR_CLASS_KEY">MOB_COMPACTOR_CLASS_KEY</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_DELFILE_MAX_COUNT">MOB_DELFILE_MAX_COUNT</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_DIR_NAME">MOB_DIR_NAME</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_FILE_CACHE_SIZE_KEY">MOB_FILE_CACHE_SIZE_KEY</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_MAJOR_COMPACTION_REGION_BATCH_SIZE">MOB_MAJOR_COMPACTION_REGION_BATCH_SIZE</a></span></code>
<div class="block">The max number of a MOB table regions that is allowed in a batch of the mob compaction.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../../org/apache/hadoop/hbase/Tag.html" title="interface in org.apache.hadoop.hbase">Tag</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_REF_TAG">MOB_REF_TAG</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_REGION_NAME">MOB_REGION_NAME</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_REGION_NAME_BYTES">MOB_REGION_NAME_BYTES</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_SCAN_RAW">MOB_SCAN_RAW</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_SCAN_REF_ONLY">MOB_SCAN_REF_ONLY</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_TABLE_LOCK_SUFFIX">MOB_TABLE_LOCK_SUFFIX</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#MOB_UNSAFE_DISCARD_MISS_KEY">MOB_UNSAFE_DISCARD_MISS_KEY</a></span></code>
<div class="block">Use this configuration option with caution, only during upgrade procedure to handle missing MOB
cells during compaction.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#OPTIMIZED_MOB_COMPACTION_TYPE">OPTIMIZED_MOB_COMPACTION_TYPE</a></span></code>
<div class="block">Mob compaction type: "full", "optimized" "full" - run full major compaction (during migration)
"optimized" - optimized version for use case with infrequent updates/deletes</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mob/MobConstants.html#TEMP_DIR_NAME">TEMP_DIR_NAME</a></span></code>&nbsp;</td>
</tr>
</table>
</li>
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<h3>Constructor Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation">
<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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<div class="block">The max number of the mob files that is allowed in a batch of the mob compaction. The mob
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large, it could lead to a "too many opened file handlers" in the merge. And the merge has to be
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