[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user tejasapatil commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r224639756
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveShim.scala ---
@@ -746,34 +746,20 @@ private[client] class Shim_v0_13 extends Shim_v0_12 {
getAllPartitionsMethod.invoke(hive,
table).asInstanceOf[JSet[Partition]]
} else {
logDebug(s"Hive metastore filter is '$filter'.")
-val tryDirectSqlConfVar =
HiveConf.ConfVars.METASTORE_TRY_DIRECT_SQL
-// We should get this config value from the metaStore. otherwise
hit SPARK-18681.
-// To be compatible with hive-0.12 and hive-0.13, In the future we
can achieve this by:
-// val tryDirectSql =
hive.getMetaConf(tryDirectSqlConfVar.varname).toBoolean
-val tryDirectSql =
hive.getMSC.getConfigValue(tryDirectSqlConfVar.varname,
- tryDirectSqlConfVar.defaultBoolVal.toString).toBoolean
try {
// Hive may throw an exception when calling this method in some
circumstances, such as
- // when filtering on a non-string partition column when the hive
config key
- // hive.metastore.try.direct.sql is false
+ // when filtering on a non-string partition column.
getPartitionsByFilterMethod.invoke(hive, table, filter)
.asInstanceOf[JArrayList[Partition]]
} catch {
- case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] &&
- !tryDirectSql =>
+ case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] =>
--- End diff --
@kmanamcheri : Lets do this:
- We should prefer doing `getPartitionsByFilterMethod()`. If it fails, we
retry with increasing delay across retries.
- If retries are exhausted, we could fetch all the partitions of the table.
Some people might not want this so lets control this using a conf flag. For
those who don't want it, the query could fail at this point.
What do you think ?
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user kmanamcheri commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223498018
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveShim.scala ---
@@ -746,34 +746,20 @@ private[client] class Shim_v0_13 extends Shim_v0_12 {
getAllPartitionsMethod.invoke(hive,
table).asInstanceOf[JSet[Partition]]
} else {
logDebug(s"Hive metastore filter is '$filter'.")
-val tryDirectSqlConfVar =
HiveConf.ConfVars.METASTORE_TRY_DIRECT_SQL
-// We should get this config value from the metaStore. otherwise
hit SPARK-18681.
-// To be compatible with hive-0.12 and hive-0.13, In the future we
can achieve this by:
-// val tryDirectSql =
hive.getMetaConf(tryDirectSqlConfVar.varname).toBoolean
-val tryDirectSql =
hive.getMSC.getConfigValue(tryDirectSqlConfVar.varname,
- tryDirectSqlConfVar.defaultBoolVal.toString).toBoolean
try {
// Hive may throw an exception when calling this method in some
circumstances, such as
- // when filtering on a non-string partition column when the hive
config key
- // hive.metastore.try.direct.sql is false
+ // when filtering on a non-string partition column.
getPartitionsByFilterMethod.invoke(hive, table, filter)
.asInstanceOf[JArrayList[Partition]]
} catch {
- case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] &&
- !tryDirectSql =>
+ case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] =>
--- End diff --
Could you review the newer changes I have done? Basically, yes, I agree
that fetching all partitions is going to be bad and hence we'll leave it up to
the user. They can disable fetching all the partitions by setting
"spark.sql.hive.metastorePartitionPruning.fallback.enabled" to false. In that
case, we'll never retry. If it is set to "true", then we'll retry. As simple as
that.
I don't completely understand "exponential backoff with retries". Do you do
this at the HMS level? or at the query level? If HMS filter pushdown fails
once, does it mean it will succeed in the future? Maybe this is a future
improvement to this where instead of a boolean "fallback-enabled" or
"fallback-disabled", we can have multiple levels for trying the fallback with
timing etc. Thoughts @tejasapatil
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user kmanamcheri commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223473324
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveShim.scala ---
@@ -746,34 +746,45 @@ private[client] class Shim_v0_13 extends Shim_v0_12 {
getAllPartitionsMethod.invoke(hive,
table).asInstanceOf[JSet[Partition]]
} else {
logDebug(s"Hive metastore filter is '$filter'.")
+val shouldFallback = SQLConf.get.metastorePartitionPruningFallback
val tryDirectSqlConfVar =
HiveConf.ConfVars.METASTORE_TRY_DIRECT_SQL
// We should get this config value from the metaStore. otherwise
hit SPARK-18681.
// To be compatible with hive-0.12 and hive-0.13, In the future we
can achieve this by:
// val tryDirectSql =
hive.getMetaConf(tryDirectSqlConfVar.varname).toBoolean
val tryDirectSql =
hive.getMSC.getConfigValue(tryDirectSqlConfVar.varname,
tryDirectSqlConfVar.defaultBoolVal.toString).toBoolean
try {
- // Hive may throw an exception when calling this method in some
circumstances, such as
- // when filtering on a non-string partition column when the hive
config key
- // hive.metastore.try.direct.sql is false
getPartitionsByFilterMethod.invoke(hive, table, filter)
.asInstanceOf[JArrayList[Partition]]
} catch {
- case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] &&
- !tryDirectSql =>
-logWarning("Caught Hive MetaException attempting to get
partition metadata by " +
- "filter from Hive. Falling back to fetching all partition
metadata, which will " +
- "degrade performance. Modifying your Hive metastore
configuration to set " +
- s"${tryDirectSqlConfVar.varname} to true may resolve this
problem.", ex)
-// HiveShim clients are expected to handle a superset of the
requested partitions
-getAllPartitionsMethod.invoke(hive,
table).asInstanceOf[JSet[Partition]]
- case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] &&
- tryDirectSql =>
-throw new RuntimeException("Caught Hive MetaException
attempting to get partition " +
- "metadata by filter from Hive. You can set the Spark
configuration setting " +
- s"${SQLConf.HIVE_MANAGE_FILESOURCE_PARTITIONS.key} to false
to work around this " +
- "problem, however this will result in degraded performance.
Please report a bug: " +
- "https://issues.apache.org/jira/browse/SPARK;, ex)
+ case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] =>
+if (shouldFallback) {
+ if (!tryDirectSql) {
--- End diff --
Good idea. Done.
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user kmanamcheri commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223469446
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/client/HiveClientSuite.scala
---
@@ -79,12 +82,30 @@ class HiveClientSuite(version: String)
client = init(true)
}
- test(s"getPartitionsByFilter returns all partitions when
$tryDirectSqlKey=false") {
-val client = init(false)
-val filteredPartitions =
client.getPartitionsByFilter(client.getTable("default", "test"),
- Seq(attr("ds") === 20170101))
+ test(s"getPartitionsByFilter returns all partitions when
$partPruningFallbackKey=true") {
+
withSQLConf(SQLConf.HIVE_METASTORE_PARTITION_PRUNING_FALLBACK_ENABLED.key ->
"true",
+SQLConf.HIVE_METASTORE_PARTITION_PRUNING.key -> "true") {
+ val client = init(false)
+ // tryDirectSql = false and a non-string partition filter will
always fail. This condition
+ // is used to test if the fallback works
+ val filteredPartitions =
client.getPartitionsByFilter(client.getTable("default", "test"),
+Seq(attr("ds") === 20170101))
-assert(filteredPartitions.size == testPartitionCount)
+ assert(filteredPartitions.size == testPartitionCount)
+}
+ }
+
+ test(s"getPartitionsByFilter should throw an exception if
$partPruningFallbackKey=false") {
--- End diff --
Ok I changed the test description to be more accurate of what we are
testing.
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223462348
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/client/HiveClientSuite.scala
---
@@ -79,12 +82,30 @@ class HiveClientSuite(version: String)
client = init(true)
}
- test(s"getPartitionsByFilter returns all partitions when
$tryDirectSqlKey=false") {
-val client = init(false)
-val filteredPartitions =
client.getPartitionsByFilter(client.getTable("default", "test"),
- Seq(attr("ds") === 20170101))
+ test(s"getPartitionsByFilter returns all partitions when
$partPruningFallbackKey=true") {
+
withSQLConf(SQLConf.HIVE_METASTORE_PARTITION_PRUNING_FALLBACK_ENABLED.key ->
"true",
+SQLConf.HIVE_METASTORE_PARTITION_PRUNING.key -> "true") {
+ val client = init(false)
+ // tryDirectSql = false and a non-string partition filter will
always fail. This condition
+ // is used to test if the fallback works
+ val filteredPartitions =
client.getPartitionsByFilter(client.getTable("default", "test"),
+Seq(attr("ds") === 20170101))
-assert(filteredPartitions.size == testPartitionCount)
+ assert(filteredPartitions.size == testPartitionCount)
+}
+ }
+
+ test(s"getPartitionsByFilter should throw an exception if
$partPruningFallbackKey=false") {
--- End diff --
Shorter: "getPartitionsByFilter fails if metastore call fails and
$partPruningFallbackKey=false"
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223461273
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveShim.scala ---
@@ -746,34 +746,45 @@ private[client] class Shim_v0_13 extends Shim_v0_12 {
getAllPartitionsMethod.invoke(hive,
table).asInstanceOf[JSet[Partition]]
} else {
logDebug(s"Hive metastore filter is '$filter'.")
+val shouldFallback = SQLConf.get.metastorePartitionPruningFallback
val tryDirectSqlConfVar =
HiveConf.ConfVars.METASTORE_TRY_DIRECT_SQL
// We should get this config value from the metaStore. otherwise
hit SPARK-18681.
// To be compatible with hive-0.12 and hive-0.13, In the future we
can achieve this by:
// val tryDirectSql =
hive.getMetaConf(tryDirectSqlConfVar.varname).toBoolean
val tryDirectSql =
hive.getMSC.getConfigValue(tryDirectSqlConfVar.varname,
tryDirectSqlConfVar.defaultBoolVal.toString).toBoolean
try {
- // Hive may throw an exception when calling this method in some
circumstances, such as
- // when filtering on a non-string partition column when the hive
config key
- // hive.metastore.try.direct.sql is false
getPartitionsByFilterMethod.invoke(hive, table, filter)
.asInstanceOf[JArrayList[Partition]]
} catch {
- case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] &&
- !tryDirectSql =>
-logWarning("Caught Hive MetaException attempting to get
partition metadata by " +
- "filter from Hive. Falling back to fetching all partition
metadata, which will " +
- "degrade performance. Modifying your Hive metastore
configuration to set " +
- s"${tryDirectSqlConfVar.varname} to true may resolve this
problem.", ex)
-// HiveShim clients are expected to handle a superset of the
requested partitions
-getAllPartitionsMethod.invoke(hive,
table).asInstanceOf[JSet[Partition]]
- case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] &&
- tryDirectSql =>
-throw new RuntimeException("Caught Hive MetaException
attempting to get partition " +
- "metadata by filter from Hive. You can set the Spark
configuration setting " +
- s"${SQLConf.HIVE_MANAGE_FILESOURCE_PARTITIONS.key} to false
to work around this " +
- "problem, however this will result in degraded performance.
Please report a bug: " +
- "https://issues.apache.org/jira/browse/SPARK;, ex)
+ case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] =>
+if (shouldFallback) {
+ if (!tryDirectSql) {
--- End diff --
Not really your fault, but getting the value of this config requires a
round-trip to the HMS, so it would be good to only do that here and avoid that
extra remote call in the normal case.
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223459567
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -544,6 +544,15 @@ object SQLConf {
.booleanConf
.createWithDefault(true)
+ val HIVE_METASTORE_PARTITION_PRUNING_FALLBACK_ENABLED =
+buildConf("spark.sql.hive.metastorePartitionPruning.fallback.enabled")
+ .doc("When true, enable fallback to fetch all partitions if Hive
metastore partition " +
+ "push down fails. This is applicable only if partition pruning
is enabled (see " +
+ s" ${HIVE_METASTORE_PARTITION_PRUNING.key}). Enabling this may
degrade performance " +
+ "if there are a large number of partitions." )
--- End diff --
"if there is"
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user mallman commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223441744
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/client/HiveClientSuite.scala
---
@@ -79,12 +82,30 @@ class HiveClientSuite(version: String)
client = init(true)
}
- test(s"getPartitionsByFilter returns all partitions when
$tryDirectSqlKey=false") {
-val client = init(false)
-val filteredPartitions =
client.getPartitionsByFilter(client.getTable("default", "test"),
- Seq(attr("ds") === 20170101))
+ test(s"getPartitionsByFilter returns all partitions when
$partPruningFallbackKey=true") {
+
withSQLConf(SQLConf.HIVE_METASTORE_PARTITION_PRUNING_FALLBACK_ENABLED.key ->
"true",
+SQLConf.HIVE_METASTORE_PARTITION_PRUNING.key -> "true") {
+ val client = init(false)
+ // tryDirectSql = false and a non-string partition filter will
always fail. This condition
+ // is used to test if the fallback works
+ val filteredPartitions =
client.getPartitionsByFilter(client.getTable("default", "test"),
+Seq(attr("ds") === 20170101))
-assert(filteredPartitions.size == testPartitionCount)
+ assert(filteredPartitions.size == testPartitionCount)
+}
+ }
+
+ test(s"getPartitionsByFilter should throw an exception if
$partPruningFallbackKey=false") {
--- End diff --
The test name states that `getPartitionsByFilter` should throw an exception
if partition pruning fallback is disabled. But that's not right. I think we
need an accurate name for this and the previous test. Perhaps it should include
a mention that the underlying call to the metastore throws an exception. How
about
```
s"getPartitionsByFilter should throw an exception if the underlying call to
the
metastore throws an exception and $partPruningFallbackKey=false"
```
?
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user kmanamcheri commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223429117
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/client/HiveClientSuite.scala
---
@@ -79,12 +82,30 @@ class HiveClientSuite(version: String)
client = init(true)
}
- test(s"getPartitionsByFilter returns all partitions when
$tryDirectSqlKey=false") {
-val client = init(false)
-val filteredPartitions =
client.getPartitionsByFilter(client.getTable("default", "test"),
- Seq(attr("ds") === 20170101))
+ test(s"getPartitionsByFilter returns all partitions when
$partPruningFallbackKey=true") {
+
withSQLConf(SQLConf.HIVE_METASTORE_PARTITION_PRUNING_FALLBACK_ENABLED.key ->
"true",
+SQLConf.HIVE_METASTORE_PARTITION_PRUNING.key -> "true") {
+ val client = init(false)
+ // tryDirectSql = false and a non-string partition filter will
always fail. This condition
+ // is used to test if the fallback works
+ val filteredPartitions =
client.getPartitionsByFilter(client.getTable("default", "test"),
+Seq(attr("ds") === 20170101))
-assert(filteredPartitions.size == testPartitionCount)
+ assert(filteredPartitions.size == testPartitionCount)
+}
+ }
+
+ test(s"getPartitionsByFilter should throw an exception if
$partPruningFallbackKey=false") {
--- End diff --
Hmm.. The behavior does not depend on the value of tryDirectSqlKey though.
It solely only depends on if pruning is enabled and if pruning.fallback is
enabled.
The reason we set tryDirectSqlKey to false is to generate a consistent way
for pruning to fail. Only setting tryDirectSql to false does not throw an
exception.
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user mallman commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223425011
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/client/HiveClientSuite.scala
---
@@ -79,12 +82,30 @@ class HiveClientSuite(version: String)
client = init(true)
}
- test(s"getPartitionsByFilter returns all partitions when
$tryDirectSqlKey=false") {
-val client = init(false)
-val filteredPartitions =
client.getPartitionsByFilter(client.getTable("default", "test"),
- Seq(attr("ds") === 20170101))
+ test(s"getPartitionsByFilter returns all partitions when
$partPruningFallbackKey=true") {
+
withSQLConf(SQLConf.HIVE_METASTORE_PARTITION_PRUNING_FALLBACK_ENABLED.key ->
"true",
+SQLConf.HIVE_METASTORE_PARTITION_PRUNING.key -> "true") {
+ val client = init(false)
+ // tryDirectSql = false and a non-string partition filter will
always fail. This condition
+ // is used to test if the fallback works
+ val filteredPartitions =
client.getPartitionsByFilter(client.getTable("default", "test"),
+Seq(attr("ds") === 20170101))
-assert(filteredPartitions.size == testPartitionCount)
+ assert(filteredPartitions.size == testPartitionCount)
+}
+ }
+
+ test(s"getPartitionsByFilter should throw an exception if
$partPruningFallbackKey=false") {
--- End diff --
Change test name to
```
s"getPartitionsByFilter should throw an exception when
$tryDirectSqlKey=false and $partPruningFallbackKey=false"
```
?
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user mallman commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223424625
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/client/HiveClientSuite.scala
---
@@ -79,12 +82,30 @@ class HiveClientSuite(version: String)
client = init(true)
}
- test(s"getPartitionsByFilter returns all partitions when
$tryDirectSqlKey=false") {
-val client = init(false)
-val filteredPartitions =
client.getPartitionsByFilter(client.getTable("default", "test"),
- Seq(attr("ds") === 20170101))
+ test(s"getPartitionsByFilter returns all partitions when
$partPruningFallbackKey=true") {
--- End diff --
Change test name to
```
s"getPartitionsByFilter returns all partitions when $tryDirectSqlKey=false
and $partPruningFallbackKey=true"
```
?
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user mallman commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223422030
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveShim.scala ---
@@ -746,34 +746,45 @@ private[client] class Shim_v0_13 extends Shim_v0_12 {
getAllPartitionsMethod.invoke(hive,
table).asInstanceOf[JSet[Partition]]
} else {
logDebug(s"Hive metastore filter is '$filter'.")
+val shouldFallback = SQLConf.get.metastorePartitionPruningFallback
val tryDirectSqlConfVar =
HiveConf.ConfVars.METASTORE_TRY_DIRECT_SQL
// We should get this config value from the metaStore. otherwise
hit SPARK-18681.
// To be compatible with hive-0.12 and hive-0.13, In the future we
can achieve this by:
// val tryDirectSql =
hive.getMetaConf(tryDirectSqlConfVar.varname).toBoolean
val tryDirectSql =
hive.getMSC.getConfigValue(tryDirectSqlConfVar.varname,
tryDirectSqlConfVar.defaultBoolVal.toString).toBoolean
try {
- // Hive may throw an exception when calling this method in some
circumstances, such as
- // when filtering on a non-string partition column when the hive
config key
- // hive.metastore.try.direct.sql is false
getPartitionsByFilterMethod.invoke(hive, table, filter)
.asInstanceOf[JArrayList[Partition]]
} catch {
- case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] &&
- !tryDirectSql =>
-logWarning("Caught Hive MetaException attempting to get
partition metadata by " +
- "filter from Hive. Falling back to fetching all partition
metadata, which will " +
- "degrade performance. Modifying your Hive metastore
configuration to set " +
- s"${tryDirectSqlConfVar.varname} to true may resolve this
problem.", ex)
-// HiveShim clients are expected to handle a superset of the
requested partitions
-getAllPartitionsMethod.invoke(hive,
table).asInstanceOf[JSet[Partition]]
- case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] &&
- tryDirectSql =>
-throw new RuntimeException("Caught Hive MetaException
attempting to get partition " +
- "metadata by filter from Hive. You can set the Spark
configuration setting " +
- s"${SQLConf.HIVE_MANAGE_FILESOURCE_PARTITIONS.key} to false
to work around this " +
- "problem, however this will result in degraded performance.
Please report a bug: " +
- "https://issues.apache.org/jira/browse/SPARK;, ex)
+ case ex: InvocationTargetException if
ex.getCause.isInstanceOf[MetaException] =>
+if (shouldFallback) {
+ if (!tryDirectSql) {
+logWarning("Caught Hive MetaException attempting to get
partition metadata by " +
+ "filter from Hive. Falling back to fetching all
partition metadata, which will " +
+ "degrade performance. Modifying your Hive metastore
configuration to set " +
+ s"${tryDirectSqlConfVar.varname} to true may resolve
this problem.")
+ } else {
+logWarning("Caught Hive MetaException attempting to get
partition metadata " +
+ "by filter from Hive. Hive metastore's direct SQL
feature has been enabled, " +
+ "but it is an optimistic optimization and not guaranteed
to work. Falling back " +
+ "to fetching all partition metadata, which will degrade
performance (for the " +
+ "current query). If you see this error consistently, you
can set the Spark " +
+ s"configuration setting
${SQLConf.HIVE_MANAGE_FILESOURCE_PARTITIONS.key} to " +
+ "false as a work around, however this will result in
degraded performance. " +
+ "Please report a bug to Hive stating that direct SQL is
failing consistently " +
+ "for the specified query:
https://issues.apache.org/jira/browse/HIVE;)
--- End diff --
I think we should remove the suggestion to file a Hive project bug. Even
with the direct SQL configuration setting enabled, there are valid metastore
deployments for which it will be ignored. For example, my understanding is that
if the metastore uses MongoDB for its underlying storage, the direct SQL
configuration setting will be ignored. That means a failure here is not a Hive
bug with direct SQL.
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user kmanamcheri commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223419868
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveShim.scala ---
@@ -754,26 +755,38 @@ private[client] class Shim_v0_13 extends Shim_v0_12 {
tryDirectSqlConfVar.defaultBoolVal.toString).toBoolean
try {
// Hive may throw an exception when calling this method in some
circumstances, such as
- // when filtering on a non-string partition column when the hive
config key
- // hive.metastore.try.direct.sql is false
+ // when filtering on a non-string partition column.
--- End diff --
Done @mallman
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user kmanamcheri commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223418766
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveShim.scala ---
@@ -754,26 +755,38 @@ private[client] class Shim_v0_13 extends Shim_v0_12 {
tryDirectSqlConfVar.defaultBoolVal.toString).toBoolean
try {
// Hive may throw an exception when calling this method in some
circumstances, such as
- // when filtering on a non-string partition column when the hive
config key
- // hive.metastore.try.direct.sql is false
+ // when filtering on a non-string partition column.
--- End diff --
> of course any method call may throw an exception in some circumstances.
:+1: Yes, you are right. I agree with removing comments which might mislead
future developers. I'll rephrase this.
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[GitHub] spark pull request #22614: [SPARK-25561][SQL] Implement a new config to cont...
Github user mallman commented on a diff in the pull request:
https://github.com/apache/spark/pull/22614#discussion_r223415835
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveShim.scala ---
@@ -754,26 +755,38 @@ private[client] class Shim_v0_13 extends Shim_v0_12 {
tryDirectSqlConfVar.defaultBoolVal.toString).toBoolean
try {
// Hive may throw an exception when calling this method in some
circumstances, such as
- // when filtering on a non-string partition column when the hive
config key
- // hive.metastore.try.direct.sql is false
+ // when filtering on a non-string partition column.
--- End diff --
To me your revised comment suggests that if we try to filter on a
non-string partition column we can expect the call to `getPartitionedByFilter`
to fail. That's not true.
Although I wrote the original comment, I can see how making an assumption
about Hive's behavior when calling this method is rather specious and unwise. I
suggest we just remove this comment entirely. To simply state that
```
Hive may throw an exception when calling this method in some circumstances.
```
only states the obviousâof course any method call may throw an exception
in some circumstances.
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