diff --git a/lib/logstorage/block_result.go b/lib/logstorage/block_result.go
index e88916cc6..d6d35825f 100644
--- a/lib/logstorage/block_result.go
+++ b/lib/logstorage/block_result.go
@@ -1343,8 +1343,8 @@ func (br *blockResult) getColumnByName(columnName string) *blockResultColumn {
 
 	// Create missing empty column
 	br.csEmpty = append(br.csEmpty, blockResultColumn{
-		name: br.a.copyString(columnName),
-		isConst: true,
+		name:          br.a.copyString(columnName),
+		isConst:       true,
 		valuesEncoded: getEmptyStrings(1),
 	})
 	return &br.csEmpty[len(br.csEmpty)-1]
diff --git a/lib/logstorage/pipe_extract.go b/lib/logstorage/pipe_extract.go
index b0e16ae35..31bfcbd4b 100644
--- a/lib/logstorage/pipe_extract.go
+++ b/lib/logstorage/pipe_extract.go
@@ -128,7 +128,9 @@ type pipeExtractProcessorShardNopad struct {
 	bm  bitmap
 	ptn *pattern
 
-	resultValues []string
+	resultColumns []*blockResultColumn
+	resultValues  []string
+
 	rcs []resultColumn
 	a   arena
 }
@@ -166,8 +168,15 @@ func (pep *pipeExtractProcessor) writeBlock(workerID uint, br *blockResult) {
 	c := br.getColumnByName(pe.fromField)
 	values := c.getValues(br)
 
+	shard.resultColumns = slicesutil.SetLength(shard.resultColumns, len(rcs))
+	resultColumns := shard.resultColumns
+	for i := range resultColumns {
+		resultColumns[i] = br.getColumnByName(rcs[i].name)
+	}
+
 	shard.resultValues = slicesutil.SetLength(shard.resultValues, len(rcs))
 	resultValues := shard.resultValues
+
 	hadUpdates := false
 	vPrev := ""
 	for rowIdx, v := range values {
@@ -181,7 +190,7 @@ func (pep *pipeExtractProcessor) writeBlock(workerID uint, br *blockResult) {
 				for i, f := range ptn.fields {
 					v := *f.value
 					if v == "" && pe.skipEmptyResults || pe.keepOriginalFields {
-						c := br.getColumnByName(rcs[i].name)
+						c := resultColumns[i]
 						if vOrig := c.getValueAtRow(br, rowIdx); vOrig != "" {
 							v = vOrig
 						}
@@ -192,10 +201,8 @@ func (pep *pipeExtractProcessor) writeBlock(workerID uint, br *blockResult) {
 				}
 			}
 		} else {
-			for i := range rcs {
-				c := br.getColumnByName(rcs[i].name)
-				v := c.getValueAtRow(br, rowIdx)
-				resultValues[i] = v
+			for i, c := range resultColumns {
+				resultValues[i] = c.getValueAtRow(br, rowIdx)
 			}
 		}
 
diff --git a/lib/logstorage/pipe_format.go b/lib/logstorage/pipe_format.go
index 805dfaaa0..76cf74209 100644
--- a/lib/logstorage/pipe_format.go
+++ b/lib/logstorage/pipe_format.go
@@ -4,8 +4,6 @@ import (
 	"fmt"
 	"strconv"
 	"unsafe"
-
-	"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
 )
 
 // pipeFormat processes '| format ...' pipe.
@@ -118,8 +116,8 @@ type pipeFormatProcessorShard struct {
 type pipeFormatProcessorShardNopad struct {
 	bm bitmap
 
-	uctx fieldsUnpackerContext
-	wctx pipeUnpackWriteContext
+	a  arena
+	rc resultColumn
 }
 
 func (pfp *pipeFormatProcessor) writeBlock(workerID uint, br *blockResult) {
@@ -128,13 +126,12 @@ func (pfp *pipeFormatProcessor) writeBlock(workerID uint, br *blockResult) {
 	}
 
 	shard := &pfp.shards[workerID]
-	shard.wctx.init(workerID, pfp.ppBase, pfp.pf.keepOriginalFields, pfp.pf.skipEmptyResults, br)
-	shard.uctx.init(workerID, "")
+	pf := pfp.pf
 
 	bm := &shard.bm
 	bm.init(len(br.timestamps))
 	bm.setBits()
-	if iff := pfp.pf.iff; iff != nil {
+	if iff := pf.iff; iff != nil {
 		iff.f.applyToBlockResult(br, bm)
 		if bm.isZero() {
 			pfp.ppBase.writeBlock(workerID, br)
@@ -142,25 +139,36 @@ func (pfp *pipeFormatProcessor) writeBlock(workerID uint, br *blockResult) {
 		}
 	}
 
+	shard.rc.name = pf.resultField
+
+	resultColumn := br.getColumnByName(pf.resultField)
 	for rowIdx := range br.timestamps {
+		v := ""
 		if bm.isSetBit(rowIdx) {
-			shard.formatRow(pfp.pf, br, rowIdx)
-			shard.wctx.writeRow(rowIdx, shard.uctx.fields)
+			v = shard.formatRow(pf, br, rowIdx)
+			if v == "" && pf.skipEmptyResults || pf.keepOriginalFields {
+				if vOrig := resultColumn.getValueAtRow(br, rowIdx); vOrig != "" {
+					v = vOrig
+				}
+			}
 		} else {
-			shard.wctx.writeRow(rowIdx, nil)
+			v = resultColumn.getValueAtRow(br, rowIdx)
 		}
+		shard.rc.addValue(v)
 	}
 
-	shard.wctx.flush()
-	shard.wctx.reset()
-	shard.uctx.reset()
+	br.addResultColumn(&shard.rc)
+	pfp.ppBase.writeBlock(workerID, br)
+
+	shard.a.reset()
+	shard.rc.reset()
 }
 
 func (pfp *pipeFormatProcessor) flush() error {
 	return nil
 }
 
-func (shard *pipeFormatProcessorShard) formatRow(pf *pipeFormat, br *blockResult, rowIdx int) {
+func (shard *pipeFormatProcessorShard) formatRow(pf *pipeFormat, br *blockResult, rowIdx int) string {
 	bb := bbPool.Get()
 	b := bb.B
 	for _, step := range pf.steps {
@@ -177,10 +185,9 @@ func (shard *pipeFormatProcessorShard) formatRow(pf *pipeFormat, br *blockResult
 	}
 	bb.B = b
 
-	s := bytesutil.ToUnsafeString(b)
-	shard.uctx.resetFields()
-	shard.uctx.addField(pf.resultField, s)
+	v := shard.a.copyBytesToString(b)
 	bbPool.Put(bb)
+	return v
 }
 
 func parsePipeFormat(lex *lexer) (*pipeFormat, error) {