[
https://issues.apache.org/jira/browse/HIVE-23560?focusedWorklogId=459458&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-459458
]
ASF GitHub Bot logged work on HIVE-23560:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 15/Jul/20 18:16
Start Date: 15/Jul/20 18:16
Worklog Time Spent: 10m
Work Description: pkumarsinha commented on a change in pull request #1232:
URL: https://github.com/apache/hive/pull/1232#discussion_r454865275
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/exec/repl/ReplDumpTask.java
##########
@@ -986,7 +1019,8 @@ String getValidTxnListForReplDump(Hive hiveDb, long
waitUntilTime) throws HiveEx
// phase won't be able to replicate those txns. So, the logic is to wait
for the given amount
// of time to see if all open txns < current txn is getting
aborted/committed. If not, then
// we forcefully abort those txns just like AcidHouseKeeperService.
- ValidTxnList validTxnList = getTxnMgr().getValidTxns();
+ //Exclude readonly and repl created tranasactions
+ ValidTxnList validTxnList =
getTxnMgr().getValidTxns(Arrays.asList(TxnType.READ_ONLY,
TxnType.REPL_CREATED));
Review comment:
Create the list once , outside the loop.
##########
File path: common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
##########
@@ -550,6 +550,11 @@ private static void populateLlapDaemonVarsSet(Set<String>
llapDaemonVarsSetLocal
"Indicates the timeout for all transactions which are opened before
triggering bootstrap REPL DUMP. "
+ "If these open transactions are not closed within the timeout
value, then REPL DUMP will "
+ "forcefully abort those transactions and continue with bootstrap
dump."),
+
REPL_BOOTSTRAP_DUMP_ABORT_WRITE_TXN_AFTER_TIMEOUT("hive.repl.bootstrap.dump.abort.write.txn.after.timeout",
Review comment:
nit: remove 'after' from the config name.
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/exec/repl/ReplDumpTask.java
##########
@@ -999,20 +1033,27 @@ String getValidTxnListForReplDump(Hive hiveDb, long
waitUntilTime) throws HiveEx
} catch (InterruptedException e) {
LOG.info("REPL DUMP thread sleep interrupted", e);
}
- validTxnList = getTxnMgr().getValidTxns();
+ validTxnList = getTxnMgr().getValidTxns(Arrays.asList(TxnType.READ_ONLY,
TxnType.REPL_CREATED));
}
// After the timeout just force abort the open txns
- List<Long> openTxns = getOpenTxns(validTxnList);
- if (!openTxns.isEmpty()) {
- hiveDb.abortTransactions(openTxns);
- validTxnList = getTxnMgr().getValidTxns();
- if (validTxnList.getMinOpenTxn() != null) {
- openTxns = getOpenTxns(validTxnList);
- LOG.warn("REPL DUMP unable to force abort all the open txns: {} after
timeout due to unknown reasons. " +
- "However, this is rare case that shouldn't happen.", openTxns);
- throw new IllegalStateException("REPL DUMP triggered abort txns failed
for unknown reasons.");
+ if (conf.getBoolVar(REPL_BOOTSTRAP_DUMP_ABORT_WRITE_TXN_AFTER_TIMEOUT)) {
+ List<Long> openTxns = getOpenTxns(validTxnList, work.dbNameOrPattern);
+ if (!openTxns.isEmpty()) {
+ //abort only write transactions for the db under replication if abort
transactions is enabled.
+ hiveDb.abortTransactions(openTxns);
+ validTxnList =
getTxnMgr().getValidTxns(Arrays.asList(TxnType.READ_ONLY,
TxnType.REPL_CREATED));
Review comment:
Shouldn't already obtained validTxnList be used here?
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/exec/repl/ReplDumpTask.java
##########
@@ -975,6 +981,33 @@ private String getValidWriteIdList(String dbName, String
tblName, String validTx
return openTxns;
}
+ List<Long> getOpenTxns(ValidTxnList validTxnList, String dbName) throws
LockException {
+ HiveLockManager lockManager = getTxnMgr().getLockManager();
+ long[] invalidTxns = validTxnList.getInvalidTransactions();
+ List<Long> openTxns = new ArrayList<>();
+ List<Long> dbTxns = new ArrayList<>();
Review comment:
Can be replaced with a HashSet for faster lookup.
##########
File path:
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenariosAcidTables.java
##########
@@ -274,6 +277,120 @@ public void testAcidTablesBootstrapWithOpenTxnsTimeout()
throws Throwable {
verifyCompactionQueue(tables, replicatedDbName, replicaConf);
}
+ @Test
+ public void testAcidTablesBootstrapWithOpenTxnsDiffDb() throws Throwable {
Review comment:
Also add a test for a case where few open txn from primary db and few
from secondary. During dump txn ids from primary gets aborted but for secondary
they are not.
##########
File path:
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenariosAcidTables.java
##########
@@ -274,6 +277,120 @@ public void testAcidTablesBootstrapWithOpenTxnsTimeout()
throws Throwable {
verifyCompactionQueue(tables, replicatedDbName, replicaConf);
}
+ @Test
+ public void testAcidTablesBootstrapWithOpenTxnsDiffDb() throws Throwable {
+ int numTxns = 5;
+ HiveConf primaryConf = primary.getConf();
+ TxnStore txnHandler = TxnUtils.getTxnStore(primary.getConf());
+ // Open 5 txns
+ List<Long> txns = openTxns(numTxns, txnHandler, primaryConf);
+
+ // Create 2 tables, one partitioned and other not. Also, have both types
of full ACID and MM tables.
+ primary.run("use " + primaryDbName)
+ .run("create table t1 (id int) clustered by(id) into 3 buckets stored as
orc " +
+ "tblproperties (\"transactional\"=\"true\")")
+ .run("insert into t1 values(1)")
+ .run("create table t2 (rank int) partitioned by (name string)
tblproperties(\"transactional\"=\"true\", " +
+ "\"transactional_properties\"=\"insert_only\")")
+ .run("insert into t2 partition(name='Bob') values(11)")
+ .run("insert into t2 partition(name='Carl') values(10)");
+
+ // Allocate write ids for both tables of secondary db for all txns
+ // t1=5 and t2=5
+ Map<String, Long> tablesInSecDb = new HashMap<>();
+ tablesInSecDb.put("t1", (long) numTxns);
+ tablesInSecDb.put("t2", (long) numTxns);
+ List<Long> lockIds = allocateWriteIdsForTablesAndAquireLocks(primaryDbName
+ "_extra",
+ tablesInSecDb, txnHandler, txns, primaryConf);
+
+ // Bootstrap dump with open txn timeout as 1s.
+ List<String> withConfigs = Arrays.asList(
+ "'hive.repl.bootstrap.dump.open.txn.timeout'='1s'");
+ WarehouseInstance.Tuple bootstrapDump = primary
+ .run("use " + primaryDbName)
+ .dump(primaryDbName, withConfigs);
+
+ // After bootstrap dump, all the opened txns should be aborted. Verify it.
Review comment:
Comment is not correct.
##########
File path:
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenariosAcidTables.java
##########
@@ -274,6 +277,120 @@ public void testAcidTablesBootstrapWithOpenTxnsTimeout()
throws Throwable {
verifyCompactionQueue(tables, replicatedDbName, replicaConf);
}
+ @Test
+ public void testAcidTablesBootstrapWithOpenTxnsDiffDb() throws Throwable {
+ int numTxns = 5;
+ HiveConf primaryConf = primary.getConf();
+ TxnStore txnHandler = TxnUtils.getTxnStore(primary.getConf());
+ // Open 5 txns
+ List<Long> txns = openTxns(numTxns, txnHandler, primaryConf);
+
+ // Create 2 tables, one partitioned and other not. Also, have both types
of full ACID and MM tables.
+ primary.run("use " + primaryDbName)
+ .run("create table t1 (id int) clustered by(id) into 3 buckets stored as
orc " +
+ "tblproperties (\"transactional\"=\"true\")")
+ .run("insert into t1 values(1)")
+ .run("create table t2 (rank int) partitioned by (name string)
tblproperties(\"transactional\"=\"true\", " +
+ "\"transactional_properties\"=\"insert_only\")")
+ .run("insert into t2 partition(name='Bob') values(11)")
+ .run("insert into t2 partition(name='Carl') values(10)");
+
+ // Allocate write ids for both tables of secondary db for all txns
+ // t1=5 and t2=5
+ Map<String, Long> tablesInSecDb = new HashMap<>();
+ tablesInSecDb.put("t1", (long) numTxns);
+ tablesInSecDb.put("t2", (long) numTxns);
+ List<Long> lockIds = allocateWriteIdsForTablesAndAquireLocks(primaryDbName
+ "_extra",
+ tablesInSecDb, txnHandler, txns, primaryConf);
+
+ // Bootstrap dump with open txn timeout as 1s.
+ List<String> withConfigs = Arrays.asList(
+ "'hive.repl.bootstrap.dump.open.txn.timeout'='1s'");
Review comment:
Use HiveConf constant
##########
File path:
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenariosAcidTables.java
##########
@@ -274,6 +277,120 @@ public void testAcidTablesBootstrapWithOpenTxnsTimeout()
throws Throwable {
verifyCompactionQueue(tables, replicatedDbName, replicaConf);
}
+ @Test
+ public void testAcidTablesBootstrapWithOpenTxnsDiffDb() throws Throwable {
+ int numTxns = 5;
+ HiveConf primaryConf = primary.getConf();
+ TxnStore txnHandler = TxnUtils.getTxnStore(primary.getConf());
+ // Open 5 txns
+ List<Long> txns = openTxns(numTxns, txnHandler, primaryConf);
+
+ // Create 2 tables, one partitioned and other not. Also, have both types
of full ACID and MM tables.
+ primary.run("use " + primaryDbName)
+ .run("create table t1 (id int) clustered by(id) into 3 buckets stored as
orc " +
+ "tblproperties (\"transactional\"=\"true\")")
+ .run("insert into t1 values(1)")
+ .run("create table t2 (rank int) partitioned by (name string)
tblproperties(\"transactional\"=\"true\", " +
+ "\"transactional_properties\"=\"insert_only\")")
+ .run("insert into t2 partition(name='Bob') values(11)")
+ .run("insert into t2 partition(name='Carl') values(10)");
+
+ // Allocate write ids for both tables of secondary db for all txns
+ // t1=5 and t2=5
+ Map<String, Long> tablesInSecDb = new HashMap<>();
+ tablesInSecDb.put("t1", (long) numTxns);
+ tablesInSecDb.put("t2", (long) numTxns);
+ List<Long> lockIds = allocateWriteIdsForTablesAndAquireLocks(primaryDbName
+ "_extra",
+ tablesInSecDb, txnHandler, txns, primaryConf);
+
+ // Bootstrap dump with open txn timeout as 1s.
+ List<String> withConfigs = Arrays.asList(
+ "'hive.repl.bootstrap.dump.open.txn.timeout'='1s'");
+ WarehouseInstance.Tuple bootstrapDump = primary
+ .run("use " + primaryDbName)
+ .dump(primaryDbName, withConfigs);
+
+ // After bootstrap dump, all the opened txns should be aborted. Verify it.
+ verifyAllOpenTxnsNotAborted(txns, primaryConf);
+ Map<String, Long> tablesInPrimary = new HashMap<>();
+ tablesInPrimary.put("t1", 1L);
+ tablesInPrimary.put("t2", 2L);
+ verifyNextId(tablesInPrimary, primaryDbName, primaryConf);
+
+ // Bootstrap load which should not replicate the write ids on both tables
as they are on different db.
+ HiveConf replicaConf = replica.getConf();
+ replica.load(replicatedDbName, primaryDbName)
+ .run("use " + replicatedDbName)
+ .run("show tables")
+ .verifyResults(new String[] {"t1", "t2"})
+ .run("repl status " + replicatedDbName)
+ .verifyResult(bootstrapDump.lastReplicationId)
+ .run("select id from t1")
+ .verifyResults(new String[]{"1"})
+ .run("select rank from t2 order by rank")
+ .verifyResults(new String[] {"10", "11"});
+
+ // Verify if HWM is properly set after REPL LOAD
+ verifyNextId(tablesInPrimary, replicatedDbName, replicaConf);
+
+ // Verify if none of the write ids are not replicated to the replicated DB
as they belong to diff db
+ for(Map.Entry<String, Long> entry : tablesInPrimary.entrySet()) {
+ entry.setValue((long) 0);
+ }
+ verifyWriteIdsForTables(tablesInPrimary, replicaConf, replicatedDbName);
+ //Abort the txns
+ txnHandler.abortTxns(new AbortTxnsRequest(txns));
+ //Release the locks
+ releaseLocks(txnHandler, lockIds);
+ }
+
+ @Test
+ public void testAcidTablesBootstrapWithOpenTxnsAbortDisabled() throws
Throwable {
+ int numTxns = 5;
+ HiveConf primaryConf = primary.getConf();
+ TxnStore txnHandler = TxnUtils.getTxnStore(primary.getConf());
+ // Open 5 txns
+ List<Long> txns = openTxns(numTxns, txnHandler, primaryConf);
+
+ // Create 2 tables, one partitioned and other not. Also, have both types
of full ACID and MM tables.
+ primary.run("use " + primaryDbName)
+ .run("create table t1 (id int) clustered by(id) into 3 buckets stored as
orc " +
+ "tblproperties (\"transactional\"=\"true\")")
+ .run("insert into t1 values(1)")
+ .run("create table t2 (rank int) partitioned by (name string)
tblproperties(\"transactional\"=\"true\", " +
+ "\"transactional_properties\"=\"insert_only\")")
+ .run("insert into t2 partition(name='Bob') values(11)")
+ .run("insert into t2 partition(name='Carl') values(10)");
+
+ // Allocate write ids for both tables t1 and t2 for all txns
+ // t1=5+1(insert) and t2=5+2(insert)
+ Map<String, Long> tables = new HashMap<>();
+ tables.put("t1", numTxns + 1L);
+ tables.put("t2", numTxns + 2L);
+ List<Long> lockIds =
allocateWriteIdsForTablesAndAquireLocks(primaryDbName, tables, txnHandler,
txns, primaryConf);
+
+ // Bootstrap dump with open txn timeout as 1s.
+ List<String> withConfigs = Arrays.asList(
+ "'hive.repl.bootstrap.dump.open.txn.timeout'='1s'",
Review comment:
Use HiveConf constant
##########
File path:
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenariosAcidTables.java
##########
@@ -274,6 +277,120 @@ public void testAcidTablesBootstrapWithOpenTxnsTimeout()
throws Throwable {
verifyCompactionQueue(tables, replicatedDbName, replicaConf);
}
+ @Test
Review comment:
Add test for bootstrap during incremental case as well
##########
File path:
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenariosAcidTables.java
##########
@@ -274,6 +277,120 @@ public void testAcidTablesBootstrapWithOpenTxnsTimeout()
throws Throwable {
verifyCompactionQueue(tables, replicatedDbName, replicaConf);
}
+ @Test
+ public void testAcidTablesBootstrapWithOpenTxnsDiffDb() throws Throwable {
+ int numTxns = 5;
+ HiveConf primaryConf = primary.getConf();
+ TxnStore txnHandler = TxnUtils.getTxnStore(primary.getConf());
+ // Open 5 txns
+ List<Long> txns = openTxns(numTxns, txnHandler, primaryConf);
+
+ // Create 2 tables, one partitioned and other not. Also, have both types
of full ACID and MM tables.
+ primary.run("use " + primaryDbName)
+ .run("create table t1 (id int) clustered by(id) into 3 buckets stored as
orc " +
+ "tblproperties (\"transactional\"=\"true\")")
+ .run("insert into t1 values(1)")
+ .run("create table t2 (rank int) partitioned by (name string)
tblproperties(\"transactional\"=\"true\", " +
+ "\"transactional_properties\"=\"insert_only\")")
+ .run("insert into t2 partition(name='Bob') values(11)")
+ .run("insert into t2 partition(name='Carl') values(10)");
+
+ // Allocate write ids for both tables of secondary db for all txns
+ // t1=5 and t2=5
+ Map<String, Long> tablesInSecDb = new HashMap<>();
+ tablesInSecDb.put("t1", (long) numTxns);
+ tablesInSecDb.put("t2", (long) numTxns);
+ List<Long> lockIds = allocateWriteIdsForTablesAndAquireLocks(primaryDbName
+ "_extra",
+ tablesInSecDb, txnHandler, txns, primaryConf);
+
+ // Bootstrap dump with open txn timeout as 1s.
+ List<String> withConfigs = Arrays.asList(
+ "'hive.repl.bootstrap.dump.open.txn.timeout'='1s'");
+ WarehouseInstance.Tuple bootstrapDump = primary
+ .run("use " + primaryDbName)
+ .dump(primaryDbName, withConfigs);
+
+ // After bootstrap dump, all the opened txns should be aborted. Verify it.
+ verifyAllOpenTxnsNotAborted(txns, primaryConf);
+ Map<String, Long> tablesInPrimary = new HashMap<>();
+ tablesInPrimary.put("t1", 1L);
+ tablesInPrimary.put("t2", 2L);
+ verifyNextId(tablesInPrimary, primaryDbName, primaryConf);
+
+ // Bootstrap load which should not replicate the write ids on both tables
as they are on different db.
+ HiveConf replicaConf = replica.getConf();
+ replica.load(replicatedDbName, primaryDbName)
+ .run("use " + replicatedDbName)
+ .run("show tables")
+ .verifyResults(new String[] {"t1", "t2"})
+ .run("repl status " + replicatedDbName)
+ .verifyResult(bootstrapDump.lastReplicationId)
+ .run("select id from t1")
+ .verifyResults(new String[]{"1"})
+ .run("select rank from t2 order by rank")
+ .verifyResults(new String[] {"10", "11"});
+
+ // Verify if HWM is properly set after REPL LOAD
+ verifyNextId(tablesInPrimary, replicatedDbName, replicaConf);
+
+ // Verify if none of the write ids are not replicated to the replicated DB
as they belong to diff db
+ for(Map.Entry<String, Long> entry : tablesInPrimary.entrySet()) {
+ entry.setValue((long) 0);
+ }
+ verifyWriteIdsForTables(tablesInPrimary, replicaConf, replicatedDbName);
+ //Abort the txns
+ txnHandler.abortTxns(new AbortTxnsRequest(txns));
+ //Release the locks
+ releaseLocks(txnHandler, lockIds);
+ }
+
+ @Test
+ public void testAcidTablesBootstrapWithOpenTxnsAbortDisabled() throws
Throwable {
+ int numTxns = 5;
+ HiveConf primaryConf = primary.getConf();
+ TxnStore txnHandler = TxnUtils.getTxnStore(primary.getConf());
+ // Open 5 txns
+ List<Long> txns = openTxns(numTxns, txnHandler, primaryConf);
+
+ // Create 2 tables, one partitioned and other not. Also, have both types
of full ACID and MM tables.
+ primary.run("use " + primaryDbName)
+ .run("create table t1 (id int) clustered by(id) into 3 buckets stored as
orc " +
+ "tblproperties (\"transactional\"=\"true\")")
+ .run("insert into t1 values(1)")
+ .run("create table t2 (rank int) partitioned by (name string)
tblproperties(\"transactional\"=\"true\", " +
+ "\"transactional_properties\"=\"insert_only\")")
+ .run("insert into t2 partition(name='Bob') values(11)")
+ .run("insert into t2 partition(name='Carl') values(10)");
+
+ // Allocate write ids for both tables t1 and t2 for all txns
+ // t1=5+1(insert) and t2=5+2(insert)
+ Map<String, Long> tables = new HashMap<>();
+ tables.put("t1", numTxns + 1L);
+ tables.put("t2", numTxns + 2L);
+ List<Long> lockIds =
allocateWriteIdsForTablesAndAquireLocks(primaryDbName, tables, txnHandler,
txns, primaryConf);
+
+ // Bootstrap dump with open txn timeout as 1s.
+ List<String> withConfigs = Arrays.asList(
+ "'hive.repl.bootstrap.dump.open.txn.timeout'='1s'",
+ "'hive.repl.bootstrap.dump.abort.write.txn.after.timeout'='false'");
+ try {
+ WarehouseInstance.Tuple bootstrapDump = primary
+ .run("use " + primaryDbName)
+ .dump(primaryDbName, withConfigs);
+ } catch (Exception e) {
+ Assert.assertEquals("REPL DUMP cannot proceed. Force abort all the open
txns is disabled. Enable " +
+ "hive.repl.bootstrap.dump.abort.write.txn.after.timeout to proceed.",
e.getMessage());
+ }
+
+ // After bootstrap dump, all the opened txns should be aborted. Verify it.
Review comment:
Comment: should not be aborted?
##########
File path:
standalone-metastore/metastore-common/src/main/thrift/hive_metastore.thrift
##########
@@ -2781,6 +2785,7 @@ PartitionsResponse get_partitions_req(1:PartitionsRequest
req)
void add_replication_metrics(1: ReplicationMetricList replicationMetricList)
throws(1:MetaException o1)
ReplicationMetricList get_replication_metrics(1:
GetReplicationMetricsRequest rqst) throws(1:MetaException o1)
+ GetOpenTxnsResponse get_open_txns_req(GetOpenTxnsRequest getOpenTxnsRequest)
Review comment:
Field id missing?
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/lockmgr/HiveTxnManager.java
##########
@@ -186,6 +186,18 @@ void replTableWriteIdState(String validWriteIdList, String
dbName, String tableN
*/
ValidTxnList getValidTxns() throws LockException;
+ /**
+ * Get the transactions that are currently valid. The resulting
+ * {@link ValidTxnList} object can be passed as string to the processing
+ * tasks for use in the reading the data. This call should be made once up
+ * front by the planner and should never be called on the backend,
+ * as this will violate the isolation level semantics.
+ * @return list of valid transactions.
+ * @param txnTypes list of transaction types that should be excluded.
+ * @throws LockException
+ */
+ ValidTxnList getValidTxns(List<TxnType> txnTypes) throws LockException;
Review comment:
List<TxnType> txnTypes : Should be replaced with a filter/regex and same
interface can be used in future for include/exclude all cases.
##########
File path:
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/BaseReplicationScenariosAcidTables.java
##########
@@ -336,18 +346,30 @@ void verifyInc2Load(String dbName, String lastReplId)
return txns;
}
- void allocateWriteIdsForTables(String primaryDbName, Map<String, Long>
tables,
- TxnStore txnHandler,
- List<Long> txns, HiveConf
primaryConf) throws Throwable {
+ List<Long> allocateWriteIdsForTablesAndAquireLocks(String primaryDbName,
Map<String, Long> tables,
+ TxnStore txnHandler,
+ List<Long> txns, HiveConf
primaryConf) throws Throwable {
AllocateTableWriteIdsRequest rqst = new AllocateTableWriteIdsRequest();
rqst.setDbName(primaryDbName);
-
+ List<Long> lockIds = new ArrayList<>();
for(Map.Entry<String, Long> entry : tables.entrySet()) {
rqst.setTableName(entry.getKey());
rqst.setTxnIds(txns);
txnHandler.allocateTableWriteIds(rqst);
+ for (long txnId : txns) {
+ LockComponent comp = new LockComponent(LockType.SHARED_WRITE,
LockLevel.TABLE,
+ primaryDbName);
+ comp.setTablename(entry.getKey());
+ comp.setOperationType(DataOperationType.UPDATE);
+ List<LockComponent> components = new ArrayList<LockComponent>(1);
+ components.add(comp);
+ LockRequest lockRequest = new LockRequest(components, "u1",
"hostname");
+ lockRequest.setTxnid(txnId);
+ lockIds.add(txnHandler.lock(lockRequest).getLockid());
Review comment:
Why is this locking required now?
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Issue Time Tracking
-------------------
Worklog Id: (was: 459458)
Time Spent: 20m (was: 10m)
> Optimize bootstrap dump to abort only write Transactions
> --------------------------------------------------------
>
> Key: HIVE-23560
> URL: https://issues.apache.org/jira/browse/HIVE-23560
> Project: Hive
> Issue Type: Task
> Reporter: Aasha Medhi
> Assignee: Aasha Medhi
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-23560.01.patch, HIVE-23560.02.patch, Optimize
> bootstrap dump to avoid aborting all transactions.pdf
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Currently before doing a bootstrap dump, we abort all open transactions after
> waiting for a configured time. We are proposing to abort only write
> transactions for the db under replication and leave the read and repl created
> transactions as is.
> This doc attached talks about it in detail
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