diff --git a/.github/workflows/linux-32bit-build-and-test.yaml b/.github/workflows/linux-32bit-build-and-test.yaml
index 920e9fd3d0e..abb0626e185 100644
--- a/.github/workflows/linux-32bit-build-and-test.yaml
+++ b/.github/workflows/linux-32bit-build-and-test.yaml
@@ -68,7 +68,7 @@ jobs:
         echo '/tmp/core.%h.%e.%t' > /proc/sys/kernel/core_pattern
         apt-get install -y gcc make cmake libssl-dev libkrb5-dev libipc-run-perl \
           libtest-most-perl sudo gdb git wget gawk lbzip2 flex bison lcov base-files \
-          locales clang-14 llvm-14 llvm-14-dev llvm-14-tools
+          locales clang-14 llvm-14 llvm-14-dev llvm-14-tools postgresql-client
 
     - name: Checkout TimescaleDB
       uses: actions/checkout@v3
diff --git a/.unreleased/bugfix_6044 b/.unreleased/bugfix_6044
new file mode 100644
index 00000000000..f9270ad46fb
--- /dev/null
+++ b/.unreleased/bugfix_6044
@@ -0,0 +1 @@
+Fixes: #6044 Server crash when using duplicate segmentby column
diff --git a/tsl/src/compression/create.c b/tsl/src/compression/create.c
index 0e7da55ffea..0e741516151 100644
--- a/tsl/src/compression/create.c
+++ b/tsl/src/compression/create.c
@@ -222,7 +222,7 @@ compresscolinfo_init(CompressColInfo *cc, Oid srctbl_relid, List *segmentby_cols
 	Relation rel;
 	TupleDesc tupdesc;
 	int i, colno, attno;
-	int16 *segorder_colindex;
+	int16 *segorder_colindex, *colindex;
 	int seg_attnolen = 0;
 	ListCell *lc;
 	Oid compresseddata_oid = ts_custom_type_cache_get(CUSTOM_TYPE_COMPRESSED_DATA)->type_oid;
@@ -230,6 +230,8 @@ compresscolinfo_init(CompressColInfo *cc, Oid srctbl_relid, List *segmentby_cols
 	seg_attnolen = list_length(segmentby_cols);
 	rel = table_open(srctbl_relid, AccessShareLock);
 	segorder_colindex = palloc0(sizeof(int32) * (rel->rd_att->natts));
+	/* To check duplicates in segmentby/orderby column list. */
+	colindex = palloc0(sizeof(int16) * (rel->rd_att->natts));
 	tupdesc = rel->rd_att;
 	i = 1;
 
@@ -245,11 +247,21 @@ compresscolinfo_init(CompressColInfo *cc, Oid srctbl_relid, List *segmentby_cols
 					 errhint("The timescaledb.compress_segmentby option must reference a valid "
 							 "column.")));
 		}
+
+		/* check if segmentby columns are distinct. */
+		if (colindex[col_attno - 1] != 0)
+			ereport(ERROR,
+					(errcode(ERRCODE_SYNTAX_ERROR),
+					 errmsg("duplicate column name \"%s\"", NameStr(col->colname)),
+					 errhint("The timescaledb.compress_segmentby option must reference distinct "
+							 "column.")));
+		colindex[col_attno - 1] = 1;
 		segorder_colindex[col_attno - 1] = i++;
 	}
 	/* the column indexes are numbered as seg_attnolen + <orderby_index>
 	 */
 	Assert(seg_attnolen == (i - 1));
+	memset(colindex, 0, sizeof(int16) * (rel->rd_att->natts));
 	foreach (lc, orderby_cols)
 	{
 		CompressedParsedCol *col = (CompressedParsedCol *) lfirst(lc);
@@ -262,6 +274,14 @@ compresscolinfo_init(CompressColInfo *cc, Oid srctbl_relid, List *segmentby_cols
 					 errhint("The timescaledb.compress_orderby option must reference a valid "
 							 "column.")));
 
+		/* check if orderby columns are distinct. */
+		if (colindex[col_attno - 1] != 0)
+			ereport(ERROR,
+					(errcode(ERRCODE_SYNTAX_ERROR),
+					 errmsg("duplicate column name \"%s\"", NameStr(col->colname)),
+					 errhint("The timescaledb.compress_orderby option must reference distinct "
+							 "column.")));
+
 		/* check if orderby_cols and segmentby_cols are distinct */
 		if (segorder_colindex[col_attno - 1] != 0)
 			ereport(ERROR,
@@ -271,6 +291,7 @@ compresscolinfo_init(CompressColInfo *cc, Oid srctbl_relid, List *segmentby_cols
 					 errhint("Use separate columns for the timescaledb.compress_orderby and"
 							 " timescaledb.compress_segmentby options.")));
 
+		colindex[col_attno - 1] = 1;
 		segorder_colindex[col_attno - 1] = i++;
 	}
 
diff --git a/tsl/test/expected/compression_errors.out b/tsl/test/expected/compression_errors.out
index a3bf686d4d6..daef6218ff3 100644
--- a/tsl/test/expected/compression_errors.out
+++ b/tsl/test/expected/compression_errors.out
@@ -195,6 +195,12 @@ HINT:  The option timescaledb.compress_segmentby must be a set of columns separa
 ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'a, p');
 ERROR:  invalid ordering column type point
 DETAIL:  Could not identify a less-than operator for the type.
+ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'b, b');
+ERROR:  duplicate column name "b"
+HINT:  The timescaledb.compress_segmentby option must reference distinct column.
+ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'b, b');
+ERROR:  duplicate column name "b"
+HINT:  The timescaledb.compress_orderby option must reference distinct column.
 --should succeed
 ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'a, b');
 --ddl on ht with compression
diff --git a/tsl/test/sql/compression_errors.sql b/tsl/test/sql/compression_errors.sql
index bd75af50c8b..2df0a672312 100644
--- a/tsl/test/sql/compression_errors.sql
+++ b/tsl/test/sql/compression_errors.sql
@@ -99,6 +99,8 @@ ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'ran
 ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'c LIMIT 1');
 ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'c + b');
 ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'a, p');
+ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_segmentby = 'b, b');
+ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'b, b');
 
 --should succeed
 ALTER TABLE foo set (timescaledb.compress, timescaledb.compress_orderby = 'a, b');