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HBASE-26726 Allow disable of region warmup before graceful move #4085

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Feb 1, 2022
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HBASE-26726 Allow disable of region warmup before graceful move #4085

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16 changes: 11 additions & 5 deletions hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
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Original file line number Diff line number Diff line change
Expand Up @@ -435,6 +435,9 @@ public class HMaster extends HBaseServerBase<MasterRpcServices> implements Maste
// Cached clusterId on stand by masters to serve clusterID requests from clients.
private final CachedClusterId cachedClusterId;

public static final String WARMUP_BEFORE_MOVE = "hbase.master.warmup.before.move";
private static final boolean DEFAULT_WARMUP_BEFORE_MOVE = true;

/**
* Initializes the HMaster. The steps are as follows:
* <p>
Expand Down Expand Up @@ -2196,11 +2199,14 @@ public void move(final byte[] encodedRegionName, byte[] destServerName) throws I

TransitRegionStateProcedure proc =
this.assignmentManager.createMoveRegionProcedure(rp.getRegionInfo(), rp.getDestination());
// Warmup the region on the destination before initiating the move.
// A region server could reject the close request because it either does not
// have the specified region or the region is being split.
warmUpRegion(rp.getDestination(), hri);

if (conf.getBoolean(WARMUP_BEFORE_MOVE, DEFAULT_WARMUP_BEFORE_MOVE)) {
// Warmup the region on the destination before initiating the move.
// A region server could reject the close request because it either does not
// have the specified region or the region is being split.
LOG.info(getClientIdAuditPrefix() + " move " + rp + ", warming up region on " +
rp.getDestination());
warmUpRegion(rp.getDestination(), hri);
}
LOG.info(getClientIdAuditPrefix() + " move " + rp + ", running balancer");
Future<byte[]> future = ProcedureSyncWait.submitProcedure(this.procedureExecutor, proc);
try {
Expand Down