Tez file Download count files exceed!

Alternatively, you can avoid the array copying by writing the stream directly to the response output stream using MemoryStream. Replace your BinaryWrite call with this:. Note: explicitly position the stream at the start since CopyTo will copy from the current position. You also missed that length is Long, while read uses an integer, so you can get an exception there.

It is a dirty hack that breaks horribly when the client doesn't do "save to disk". And finally, you don't encode the filename correctly, so if one uses non-ASCII characters for the filename, it will garble the filename, which is very funny if you happen to be Chinese or Russian and operate entirely outside the ASCII character set.

Here a quick excerpt from one of my ajax handlers. It's VB. NET, when converting, take care on the length -1 things. You're using a very long way to convert string to bytes. Are you sure, that you need any streams?

Why just don't use encoding? Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How to download memorystream to a file? Ask Question. Asked 8 years, 6 months ago. Active 8 years, 2 months ago. Viewed 74k times. I'm using the below sample code for writing and downloading a memory stream to a file in C. Length]; memoryStream. A COMMA-separated list of group names that the users should belong to at least one of the groups for authentication to succeed.

LDAP attribute name on the group object that contains the list of distinguished names for the user, group, and contact objects that are members of the group. For example: member, uniqueMember, or memberUid. The value of the LDAP attribute, indicated by this property, should be a full DN for the user or the short username or userid. See Group Membership for a detailed example.

This property can also be used to find the users if a custom-configured LDAP query returns a group instead of a user as of Hive 2. LDAP attribute name on the user object that contains groups of which the user is a direct member, except for the primary group, which is represented by the primaryGroupId. For example: memberOf. The value of this property is used to construct LDAP group search query and is used to indicate what a group's objectClass is.

See User Search List for details. If the user is part of the query's result set, authentication succeeds. See Custom Query String for details. Specifies a fully qualified domain user to use when binding to LDAP for authentication, instead of using the user itself. This allows for scenarios where all users don't have search permissions on LDAP, instead requiring only the bind user to have search permissions.

The password for the bind domain name. This password may be specified in the configuration file directly, or in a credentials provider to the cluster. This setting must be set somewhere if hive. Either the location of a HiveServer2 global init file or a directory containing a. If the property is set, the value must be a valid path to an init file or directory where the init file is located. Server transport mode. Value can be "binary" or "http".

Maximum idle time for a connection on the server when in HTTP mode. Keepalive time in seconds for an idle http worker thread. Sasl QOP value; set it to one of the following values to enable higher levels of protection for HiveServer2 communication with clients. Note that hadoop. HiveServer2 ignores hadoop.

This setting reflects how HiveServer2 will report the table types for JDBC and other client implementations that retrieve the available tables and supported table types. The number of times HiveServer2 will attempt to start before exiting, sleeping 60 seconds between retries.

The default of 30 will keep trying for 30 minutes. Size of the wait queue for async thread pool in HiveServer2. After hitting this limit, the async thread pool will reject new requests. Time in seconds that an idle HiveServer2 async thread from the thread pool will wait for a new task to arrive before terminating. Time in milliseconds that HiveServer2 will wait, before responding to asynchronous calls that use long polling. Allow alternate user to be specified as part of HiveServer2 open connection request.

List of the underlying PAM services that should be used when hive. A list of comma separated values corresponding to YARN queues of the same name. When HiveServer2 is launched in Tez mode, this configuration needs to be set for multiple Tez sessions to run in parallel on the cluster. A positive integer that determines the number of Tez sessions that should be launched on each of the queues specified by hive.

Determines the parallelism on each queue. The user could potentially want to run queries over Tez without the pool of sessions. With negative value, it's checked for all of the operations regardless of state. When true , HiveServer2 operation logs available for clients will be verbose. Replaced in Hive 1. For this to work, hive.

The allowed values are:. Session will be closed when connection is closed. Set this to false to have session outlive its parent connection. This configuration property enables the user to provide a comma-separated list of URLs which provide the type and location of Hadoop credential providers.

These credential providers are used by HiveServer2 for providing job-specific credentials launched using MR or Spark execution engines. This functionality has not been tested against Tez. Allows HiveServer2 to send progress bar update information. This is currently available only if the execution engine is tez.

Users can set this parameter in hiveserver2. A web interface for HiveServer2 is introduced in release 2. It can also be used to check some information about active sessions and queries being executed.

Prior to Hive 3. Set this to true to to display query plan as a graph instead of text in the WebUI. Only works with hive. Max number of stages graph can display. If number of stages exceeds this, no query plan will be shown. Only works when hive. Apache Spark was added in Hive 1. To configure Hive execution to Spark, set the following property to " spark ":. Besides the configuration properties listed in this section, some properties in other sections are also related to Spark:.

When true, this turns on dynamic partition pruning for the Spark engine, so that joins on partition keys will be processed by writing to a temporary HDFS file, and read later for removing unnecessary partitions. Similar to hive. The maximum data size for the dimension table that generates partition pruning information.

If reaches this limit, the optimization will be turned off. Whether to show explain result at user level for Hive-on-Spark queries. Time to wait to finish prewarming Spark executors when hive. Note: These configuration properties for Hive on Spark are documented in the Tez section because they can also affect Tez:.

If this is set to true, Hive on Spark will register custom serializers for data types in shuffle. This should result in less shuffled data. Amount of time the Spark Remote Driver should wait for a Spark job to be submitted before shutting down. If a Spark job is not launched after this amount of time, the Spark Remote Driver will shutdown, thus releasing any resources it has been holding onto. The tradeoff is that any new Hive-on-Spark queries that run in the same session will have to wait for a new Spark Remote Driver to startup.

The benefit is that for long running Hive sessions, the Spark Remote Driver doesn't unnecessarily hold onto resources. Minimum value is 30 minutes. How frequently to check for idle Spark sessions. Minimum value is 60 seconds. Whether to use operator stats to determine reducer parallelism for Hive on Spark. If this is false, Hive will use source table stats to determine reducer parallelism for all first level reduce tasks, and the maximum reducer parallelism from all parents for all the rest second level and onward reducer tasks.

Setting this to false triggers an alternative algorithm for calculating the number of partitions per Spark shuffle. This new algorithm typically results in an increased number of partitions per shuffle. While groupByKey has better performance when running group bys, it can use an excessive amount of memory. Setting this to false may reduce memory usage, but will hurt performance. Sets the number of reduce tasks for each Spark shuffle stage e.

This is set to -1 by default disabled ; instead the number of reduce tasks is dynamically calculated based on Hive data statistics.

Setting this to a constant value sets the same number of partitions for all Spark shuffle stages. The remote Spark driver is the application launched in the Spark cluster, that submits the actual Spark job. It was introduced in HIVE It is a long-lived application initialized upon the first query of the current user, running until the user's session is closed.

The following properties control the remote communication between the remote Spark driver and the Hive client that spawns it. Timeout for requests from Hive client to remote Spark driver. Number of bits of randomness in the generated secret for communication between Hive client and remote Spark driver. Rounded down to nearest multiple of 8. The server address of HiverServer2 host to be used for communication between Hive client and remote Spark driver.

Maximum message size in bytes for communication between Hive client and remote Spark driver. Default is 50 MB. Channel logging level for remote Spark driver. Apache Tez was added in Hive 0. For information see the design document Hive on Tez , especially the Installation and Configuration section.

Besides the configuration properties listed in this section, some properties in other sections are also related to Tez:.

This is the location that Hive in Tez mode will look for to find a site-wide installed Hive instance. If Hive in Tez mode only cannot find a usable Hive jar in hive.

Whether to generate the splits locally or in the ApplicationMaster Tez only. Enables container prewarm for Tez 0. This is for Hadoop 2 only.

Controls the number of containers to prewarm for Tez 0. The default input format for Tez. Tez groups splits in the AM ApplicationMaster. Whether to generate consistent split locations when generating splits in the AM. Setting to false randomizes the location and order of splits depending on how threads generate. By default Tez will spawn containers of the size of a mapper. This can be used to overwrite the default. By default Tez will use the Java options from map tasks.

Whether joins can be automatically converted to bucket map joins in Hive when Tez is used as the execution engine hive. The log level to use for tasks executing as part of the DAG. Used only if hive. Time in milliseconds to wait for another thread to localize the same resource for Hive-Tez. The number of attempts waiting for localizing a resource in Hive-Tez. The number of waves in which to run the SMB sort-merge-bucket join. Account for cluster being occupied.

Ideally should be 1 wave. Turn on Tez' auto reducer parallelism feature. When enabled, Hive will still estimate data sizes and set parallelism estimates. Tez will sample source vertices' output sizes and adjust the estimates at runtime as necessary. When auto reducer parallelism is enabled this factor will be used to over-partition data in shuffle edges.

When auto reducer parallelism is enabled this factor will be used to put a lower limit to the number of reducers that Tez specifies. If true, displays breakdown of execution steps for every query executed on Hive CLI or Beeline client. Chooses whether query fragments will run in a container or in LLAP. When set to " all " everything runs in LLAP if possible; " only " is like " all " but disables fallback to containers, so that the query fails if it cannot run in LLAP.

The number of queries allowed in parallel via llap. Negative number implies 'infinite'. Whether to setup split locations to match nodes on which LLAP daemons are running, instead of using the locations provided by the split itself.

Explicitly specified hosts to use for LLAP scheduling. Useful for testing. By default, YARN registry is used. Comma-delimited set of integers denoting the desired rollover intervals in seconds for percentile latency metrics. Used by LLAP daemon task scheduler metrics for time taken to kill task due to pre-emption and useful time wasted by the task that is about to be preempted. LLAP IO memory usage; 'cache' the default uses data and metadata cache with a custom off-heap allocator, 'allocator' uses the custom allocator without the caches, 'none' doesn't use either this mode may result in significant performance degradation.

Minimum allocation possible from LLAP buddy allocator. Allocations below that are padded to minimum allocation. For ORC, should generally be the same as the expected compression buffer size, or next lowest power of 2.

Must be a power of 2. Maximum allocation possible from LLAP buddy allocator. Using powers of 2 is recommended. Comma-delimited set of integers denoting the desired rollover intervals in seconds for percentile latency metrics on the LLAP daemon producer-consumer queue.

LLAP delegation token lifetime, in seconds if specified without a unit. To turn on Hive transactions, change the values of these parameters from their defaults, as described below:. Set this to org. DbTxnManager as part of turning on Hive transactions.

The default DummyTxnManager replicates pre-Hive Turning on Hive transactions also requires appropriate settings for hive. Only apples when hive. Time after which transactions are declared aborted if the client has not sent a heartbeat, in seconds.

The number of threads to use for heartbeating. Time delay of first reaper the process which aborts timed-out transactions run after the metastore start. Time interval describing how often the reaper the process which aborts timed-out transactions runs.

This controls how many transactions streaming agents such as Flume or Storm open simultaneously. The streaming agent then writes that number of entries into a single file per Flume agent or Storm bolt. Thus increasing this value decreases the number of delta files created by streaming agents.

But it also increases the number of open transactions that Hive has to track at any given time, which may negatively affect read performance. Maximum number of open transactions.

If current open transactions reach this limit, future open transaction requests will be rejected, until the number goes below the limit.

Comma separated list of regular expression patterns for SQL state, error code, and error message of retryable SQLExceptions, that's suitable for the Hive metastore database.

The string that the regex will be matched against is of the following form, where ex is a SQLException:. Whether to run the initiator and cleaner threads on this metastore instance. Set this to true on one instance of the Thrift metastore service as part of turning on Hive transactions.

For a complete list of parameters required for turning on transactions, see hive. Before Hive 1. When the Code42 app attempts to read these files for backup, it fails because Windows doesn't know how to handle the file.

When this occurs, the following error message displays in the Code42 app service. It can be difficult to correct this issue. If you try to rename, move, or delete the file in Windows, you may receive the following messages:. Since you are not able to move the files using Windows Explorer, you must use the subst command to shorten the file path for the file s. You can substitute a specific folder path with a drive letter using the Windows Command Prompt and the subst command.

The command follows the format:. Now the Y: drive is "mapped" directly to the folder. Log in to the HDFS client as user root. Run hdfs dfs -ls file or directory to check whether the files in the directory can be deleted. If yes, go to 8. If no, go to 9. Run the hdfs dfs -rm -r file or directory path command. After deleting unnecessary files, wait until the files are retained in the recycle bin for a period longer than the value of fs.

Then check whether the alarm is cleared. Alarm Clearing After the fault that triggers the alarm is rectified, the alarm is automatically cleared. The following table lists the reference values.

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