kvcoord: disable buffered writes for release

Epic: none
Release note: None

Author: stevendanna

docs/generated/settings/settings-for-tenants.txt

@@ -100,7 +100,7 @@ kv.transaction.max_intents_bytes	integer	4194304	maximum number of bytes used to
 kv.transaction.max_refresh_spans_bytes	integer	4194304	maximum number of bytes used to track refresh spans in serializable transactions	application
 kv.transaction.randomized_anchor_key.enabled	boolean	false	dictates whether a transactions anchor key is randomized or not	application
 kv.transaction.reject_over_max_intents_budget.enabled	boolean	false	if set, transactions that exceed their lock tracking budget (kv.transaction.max_intents_bytes) are rejected instead of having their lock spans imprecisely compressed	application
-kv.transaction.write_buffering.enabled	boolean	true	if enabled, transactional writes are buffered on the client	application
+kv.transaction.write_buffering.enabled	boolean	false	if enabled, transactional writes are buffered on the client	application
 kv.transaction.write_buffering.max_buffer_size	byte size	4.0 MiB	if non-zero, defines that maximum size of the buffer that will be used to buffer transactional writes per-transaction	application
 kv.transaction.write_pipelining.locking_reads.enabled	boolean	true	if enabled, transactional locking reads are pipelined through Raft consensus	application
 kv.transaction.write_pipelining.ranged_writes.enabled	boolean	true	if enabled, transactional ranged writes are pipelined through Raft consensus	application

docs/generated/settings/settings.html

@@ -129,7 +129,7 @@
 <tr><td><div id="setting-kv-transaction-max-refresh-spans-bytes" class="anchored"><code>kv.transaction.max_refresh_spans_bytes</code></div></td><td>integer</td><td><code>4194304</code></td><td>maximum number of bytes used to track refresh spans in serializable transactions</td><td>Basic/Standard/Advanced/Self-Hosted</td></tr>
 <tr><td><div id="setting-kv-transaction-randomized-anchor-key-enabled" class="anchored"><code>kv.transaction.randomized_anchor_key.enabled</code></div></td><td>boolean</td><td><code>false</code></td><td>dictates whether a transactions anchor key is randomized or not</td><td>Basic/Standard/Advanced/Self-Hosted</td></tr>
 <tr><td><div id="setting-kv-transaction-reject-over-max-intents-budget-enabled" class="anchored"><code>kv.transaction.reject_over_max_intents_budget.enabled</code></div></td><td>boolean</td><td><code>false</code></td><td>if set, transactions that exceed their lock tracking budget (kv.transaction.max_intents_bytes) are rejected instead of having their lock spans imprecisely compressed</td><td>Basic/Standard/Advanced/Self-Hosted</td></tr>
-<tr><td><div id="setting-kv-transaction-write-buffering-enabled" class="anchored"><code>kv.transaction.write_buffering.enabled</code></div></td><td>boolean</td><td><code>true</code></td><td>if enabled, transactional writes are buffered on the client</td><td>Basic/Standard/Advanced/Self-Hosted</td></tr>
+<tr><td><div id="setting-kv-transaction-write-buffering-enabled" class="anchored"><code>kv.transaction.write_buffering.enabled</code></div></td><td>boolean</td><td><code>false</code></td><td>if enabled, transactional writes are buffered on the client</td><td>Basic/Standard/Advanced/Self-Hosted</td></tr>
 <tr><td><div id="setting-kv-transaction-write-buffering-max-buffer-size" class="anchored"><code>kv.transaction.write_buffering.max_buffer_size</code></div></td><td>byte size</td><td><code>4.0 MiB</code></td><td>if non-zero, defines that maximum size of the buffer that will be used to buffer transactional writes per-transaction</td><td>Basic/Standard/Advanced/Self-Hosted</td></tr>
 <tr><td><div id="setting-kv-transaction-write-pipelining-locking-reads-enabled" class="anchored"><code>kv.transaction.write_pipelining.locking_reads.enabled</code></div></td><td>boolean</td><td><code>true</code></td><td>if enabled, transactional locking reads are pipelined through Raft consensus</td><td>Basic/Standard/Advanced/Self-Hosted</td></tr>
 <tr><td><div id="setting-kv-transaction-write-pipelining-ranged-writes-enabled" class="anchored"><code>kv.transaction.write_pipelining.ranged_writes.enabled</code></div></td><td>boolean</td><td><code>true</code></td><td>if enabled, transactional ranged writes are pipelined through Raft consensus</td><td>Basic/Standard/Advanced/Self-Hosted</td></tr>

pkg/kv/kvclient/kvcoord/txn_interceptor_write_buffer.go

@@ -40,22 +40,22 @@ var BufferedWritesEnabled = settings.RegisterBoolSetting(
 	settings.ApplicationLevel,
 	"kv.transaction.write_buffering.enabled",
 	"if enabled, transactional writes are buffered on the client",
-	metamorphic.ConstantWithTestBool("kv.transaction.write_buffering.enabled", true /* defaultValue */),
+	metamorphic.ConstantWithTestBool("kv.transaction.write_buffering.enabled", false /* defaultValue */),
 	settings.WithPublic,
 )
 
 var bufferedWritesScanTransformEnabled = settings.RegisterBoolSetting(
 	settings.ApplicationLevel,
 	"kv.transaction.write_buffering.transformations.scans.enabled",
 	"if enabled, locking scans and reverse scans with replicated durability are transformed to unreplicated durability",
-	metamorphic.ConstantWithTestBool("kv.transaction.write_buffering.transformations.scans.enabled", true /* defaultValue */),
+	metamorphic.ConstantWithTestBool("kv.transaction.write_buffering.transformations.scans.enabled", false /* defaultValue */),
 )
 
 var bufferedWritesGetTransformEnabled = settings.RegisterBoolSetting(
 	settings.ApplicationLevel,
 	"kv.transaction.write_buffering.transformations.get.enabled",
 	"if enabled, locking get requests with replicated durability are transformed to unreplicated durability",
-	metamorphic.ConstantWithTestBool("kv.transaction.write_buffering.transformations.get.enabled", true /* defaultValue */),
+	metamorphic.ConstantWithTestBool("kv.transaction.write_buffering.transformations.get.enabled", false /* defaultValue */),
 )
 
 const defaultBufferSize = 1 << 22 // 4MB