[DO NOT MERGE] Investigate COW failure for null lock provider

[codope]

Change Logs

[DO NOT MERGE] Investigate COW failure for null lock provider. See #12737 (review) for more context.

Added more debug logs. NPE is coming when transaction manager is attempting to acquire lock for a write (happening after upgrade):

java.lang.NullPointerException
	at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1645)
	at org.apache.hudi.common.util.ReflectionUtils.getClass(ReflectionUtils.java:51)
	at org.apache.hudi.common.util.ReflectionUtils.loadClass(ReflectionUtils.java:73)
	at org.apache.hudi.client.transaction.lock.LockManager.getLockProvider(LockManager.java:111)
	at org.apache.hudi.client.transaction.lock.LockManager.lambda$lock$20c251e3$1(LockManager.java:80)
	at org.apache.hudi.common.util.RetryHelper.start(RetryHelper.java:94)
	at org.apache.hudi.client.transaction.lock.LockManager.lock(LockManager.java:77)
	at org.apache.hudi.client.transaction.TransactionManager.beginTransaction(TransactionManager.java:58)
	at org.apache.hudi.client.BaseHoodieWriteClient.executeUsingTxnManager(BaseHoodieWriteClient.java:1310)
	at org.apache.hudi.client.BaseHoodieWriteClient.doInitTable(BaseHoodieWriteClient.java:1302)
	at org.apache.hudi.client.BaseHoodieWriteClient.initTable(BaseHoodieWriteClient.java:1352)
	at org.apache.hudi.client.SparkRDDWriteClient.upsert(SparkRDDWriteClient.java:129)
	at org.apache.hudi.DataSourceUtils.doWriteOperation(DataSourceUtils.java:227)
	at org.apache.hudi.HoodieSparkSqlWriterInternal.liftedTree1$1(HoodieSparkSqlWriter.scala:518)
	at org.apache.hudi.HoodieSparkSqlWriterInternal.writeInternal(HoodieSparkSqlWriter.scala:516)
	at org.apache.hudi.HoodieSparkSqlWriterInternal.$anonfun$write$1(HoodieSparkSqlWriter.scala:193)

Impact

Investigation. DO NOT MERGE.

Risk level (write none, low medium or high below)

none

Documentation Update

Describe any necessary documentation update if there is any new feature, config, or user-facing change. If not, put "none".

• The config description must be updated if new configs are added or the default value of the configs are changed
• Any new feature or user-facing change requires updating the Hudi website. Please create a Jira ticket, attach the
  ticket number here and follow the instruction to make
  changes to the website.

Contributor's checklist

• Read through contributor's guide
• Change Logs and Impact were stated clearly
• Adequate tests were added if applicable
• CI passed

[hudi-bot]

CI report:

• e4e46aa Azure: FAILURE

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